diff --git a/CHANGES.txt b/CHANGES.txt
index 3ee73fb..541554e 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,3 +1,6 @@
+v0.4, 24 Dec 2012
+    Add set_payload.
+
 v0.2, 13 May 2011
     Rename NetfilterQueue to QueueHandler.
     Add API section to README.rst.
diff --git a/netfilterqueue.c b/netfilterqueue.c
index 4b3badf..d4bb9c1 100644
--- a/netfilterqueue.c
+++ b/netfilterqueue.c
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.15.1 on Mon Dec 24 11:15:48 2012 */
+/* Generated by Cython 0.15.1 on Mon Dec 24 11:23:18 2012 */
 
 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
@@ -240,7 +240,6 @@
 #include "libnetfilter_queue/linux_nfnetlink_queue.h"
 #include "libnetfilter_queue/libnetfilter_queue.h"
 #include "sys/socket.h"
-#include "string.h"
 #ifdef _OPENMP
 #include <omp.h>
 #endif /* _OPENMP */
@@ -450,7 +449,7 @@ struct __pyx_obj_14netfilterqueue_NetfilterQueue {
 
 
 
-/* "netfilterqueue.pyx":35
+/* "netfilterqueue.pyx":34
  *     return 1
  * 
  * cdef class Packet:             # <<<<<<<<<<<<<<
@@ -625,8 +624,6 @@ static void __Pyx_AddTraceback(const char *funcname, int __pyx_clineno,
 
 static int __Pyx_InitStrings(__Pyx_StringTabEntry *t); /*proto*/
 
-/* Module declarations from 'libc.string' */
-
 /* Module declarations from 'netfilterqueue' */
 static PyTypeObject *__pyx_ptype_14netfilterqueue_Packet = 0;
 static PyTypeObject *__pyx_ptype_14netfilterqueue_NetfilterQueue = 0;
@@ -1135,7 +1132,7 @@ static PyObject *__pyx_k_tuple_8;
 static PyObject *__pyx_k_tuple_14;
 static PyObject *__pyx_k_tuple_16;
 
-/* "netfilterqueue.pyx":24
+/* "netfilterqueue.pyx":23
  * DEF MaxCopySize = BufferSize - MetadataSize
  * 
  * cdef int global_callback(nfq_q_handle *qh, nfgenmsg *nfmsg,             # <<<<<<<<<<<<<<
@@ -1159,7 +1156,7 @@ static int __pyx_f_14netfilterqueue_global_callback(struct nfq_q_handle *__pyx_v
   #endif
   __Pyx_RefNannySetupContext("global_callback");
 
-  /* "netfilterqueue.pyx":27
+  /* "netfilterqueue.pyx":26
  *                          nfq_data *nfa, void *data) with gil:
  *     """Create a Packet and pass it to appropriate callback."""
  *     cdef NetfilterQueue nfqueue = <NetfilterQueue>data             # <<<<<<<<<<<<<<
@@ -1169,7 +1166,7 @@ static int __pyx_f_14netfilterqueue_global_callback(struct nfq_q_handle *__pyx_v
   __Pyx_INCREF(((PyObject *)((struct __pyx_obj_14netfilterqueue_NetfilterQueue *)__pyx_v_data)));
   __pyx_v_nfqueue = ((struct __pyx_obj_14netfilterqueue_NetfilterQueue *)__pyx_v_data);
 
-  /* "netfilterqueue.pyx":28
+  /* "netfilterqueue.pyx":27
  *     """Create a Packet and pass it to appropriate callback."""
  *     cdef NetfilterQueue nfqueue = <NetfilterQueue>data
  *     cdef object user_callback = <object>nfqueue.user_callback             # <<<<<<<<<<<<<<
@@ -1179,47 +1176,47 @@ static int __pyx_f_14netfilterqueue_global_callback(struct nfq_q_handle *__pyx_v
   __Pyx_INCREF(((PyObject *)__pyx_v_nfqueue->user_callback));
   __pyx_v_user_callback = __pyx_v_nfqueue->user_callback;
 
-  /* "netfilterqueue.pyx":30
+  /* "netfilterqueue.pyx":29
  *     cdef object user_callback = <object>nfqueue.user_callback
  * 
  *     packet = Packet()             # <<<<<<<<<<<<<<
  *     packet.set_nfq_data(qh, nfa)
  *     user_callback(packet)
  */
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_14netfilterqueue_Packet)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 30; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_14netfilterqueue_Packet)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_packet = ((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "netfilterqueue.pyx":31
+  /* "netfilterqueue.pyx":30
  * 
  *     packet = Packet()
  *     packet.set_nfq_data(qh, nfa)             # <<<<<<<<<<<<<<
  *     user_callback(packet)
  *     return 1
  */
-  __pyx_t_1 = ((struct __pyx_vtabstruct_14netfilterqueue_Packet *)__pyx_v_packet->__pyx_vtab)->set_nfq_data(__pyx_v_packet, __pyx_v_qh, __pyx_v_nfa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = ((struct __pyx_vtabstruct_14netfilterqueue_Packet *)__pyx_v_packet->__pyx_vtab)->set_nfq_data(__pyx_v_packet, __pyx_v_qh, __pyx_v_nfa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 30; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "netfilterqueue.pyx":32
+  /* "netfilterqueue.pyx":31
  *     packet = Packet()
  *     packet.set_nfq_data(qh, nfa)
  *     user_callback(packet)             # <<<<<<<<<<<<<<
  *     return 1
  * 
  */
-  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_1));
   __Pyx_INCREF(((PyObject *)__pyx_v_packet));
   PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_v_packet));
   __Pyx_GIVEREF(((PyObject *)__pyx_v_packet));
-  __pyx_t_2 = PyObject_Call(__pyx_v_user_callback, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_Call(__pyx_v_user_callback, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-  /* "netfilterqueue.pyx":33
+  /* "netfilterqueue.pyx":32
  *     packet.set_nfq_data(qh, nfa)
  *     user_callback(packet)
  *     return 1             # <<<<<<<<<<<<<<
@@ -1247,7 +1244,7 @@ static int __pyx_f_14netfilterqueue_global_callback(struct nfq_q_handle *__pyx_v
   return __pyx_r;
 }
 
-/* "netfilterqueue.pyx":37
+/* "netfilterqueue.pyx":36
  * cdef class Packet:
  *     """A packet received from NetfilterQueue."""
  *     def __cinit__(self):             # <<<<<<<<<<<<<<
@@ -1264,7 +1261,7 @@ static int __pyx_pf_14netfilterqueue_6Packet___cinit__(PyObject *__pyx_v_self, P
     __Pyx_RaiseArgtupleInvalid("__cinit__", 1, 0, 0, PyTuple_GET_SIZE(__pyx_args)); return -1;}
   if (unlikely(__pyx_kwds) && unlikely(PyDict_Size(__pyx_kwds) > 0) && unlikely(!__Pyx_CheckKeywordStrings(__pyx_kwds, "__cinit__", 0))) return -1;
 
-  /* "netfilterqueue.pyx":38
+  /* "netfilterqueue.pyx":37
  *     """A packet received from NetfilterQueue."""
  *     def __cinit__(self):
  *         self._verdict_is_set = False             # <<<<<<<<<<<<<<
@@ -1273,7 +1270,7 @@ static int __pyx_pf_14netfilterqueue_6Packet___cinit__(PyObject *__pyx_v_self, P
  */
   ((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_v_self)->_verdict_is_set = 0;
 
-  /* "netfilterqueue.pyx":39
+  /* "netfilterqueue.pyx":38
  *     def __cinit__(self):
  *         self._verdict_is_set = False
  *         self._mark_is_set = False             # <<<<<<<<<<<<<<
@@ -1282,7 +1279,7 @@ static int __pyx_pf_14netfilterqueue_6Packet___cinit__(PyObject *__pyx_v_self, P
  */
   ((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_v_self)->_mark_is_set = 0;
 
-  /* "netfilterqueue.pyx":40
+  /* "netfilterqueue.pyx":39
  *         self._verdict_is_set = False
  *         self._mark_is_set = False
  *         self._given_payload = None             # <<<<<<<<<<<<<<
@@ -1300,7 +1297,7 @@ static int __pyx_pf_14netfilterqueue_6Packet___cinit__(PyObject *__pyx_v_self, P
   return __pyx_r;
 }
 
-/* "netfilterqueue.pyx":42
+/* "netfilterqueue.pyx":41
  *         self._given_payload = None
  * 
  *     def __str__(self):             # <<<<<<<<<<<<<<
@@ -1322,7 +1319,7 @@ static PyObject *__pyx_pf_14netfilterqueue_6Packet_1__str__(PyObject *__pyx_v_se
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__str__");
 
-  /* "netfilterqueue.pyx":43
+  /* "netfilterqueue.pyx":42
  * 
  *     def __str__(self):
  *         cdef iphdr *hdr = <iphdr*>self.payload             # <<<<<<<<<<<<<<
@@ -1331,21 +1328,21 @@ static PyObject *__pyx_pf_14netfilterqueue_6Packet_1__str__(PyObject *__pyx_v_se
  */
   __pyx_v_hdr = ((struct iphdr *)((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_v_self)->payload);
 
-  /* "netfilterqueue.pyx":44
+  /* "netfilterqueue.pyx":43
  *     def __str__(self):
  *         cdef iphdr *hdr = <iphdr*>self.payload
  *         protocol = PROTOCOLS.get(hdr.protocol, "Unknown protocol")             # <<<<<<<<<<<<<<
  *         return "%s packet, %s bytes" % (protocol, self.payload_len)
  * 
  */
-  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__PROTOCOLS); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 44; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__PROTOCOLS); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = PyObject_GetAttr(__pyx_t_1, __pyx_n_s__get); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 44; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_GetAttr(__pyx_t_1, __pyx_n_s__get); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-  __pyx_t_1 = __Pyx_PyInt_to_py_u_int8_t(__pyx_v_hdr->protocol); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 44; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_PyInt_to_py_u_int8_t(__pyx_v_hdr->protocol); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_3 = PyTuple_New(2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 44; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyTuple_New(2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_3));
   PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_t_1);
   __Pyx_GIVEREF(__pyx_t_1);
@@ -1353,14 +1350,14 @@ static PyObject *__pyx_pf_14netfilterqueue_6Packet_1__str__(PyObject *__pyx_v_se
   PyTuple_SET_ITEM(__pyx_t_3, 1, ((PyObject *)__pyx_kp_s_1));
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_1));
   __pyx_t_1 = 0;
-  __pyx_t_1 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 44; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
   __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
   __pyx_v_protocol = __pyx_t_1;
   __pyx_t_1 = 0;
 
-  /* "netfilterqueue.pyx":45
+  /* "netfilterqueue.pyx":44
  *         cdef iphdr *hdr = <iphdr*>self.payload
  *         protocol = PROTOCOLS.get(hdr.protocol, "Unknown protocol")
  *         return "%s packet, %s bytes" % (protocol, self.payload_len)             # <<<<<<<<<<<<<<
@@ -1368,9 +1365,9 @@ static PyObject *__pyx_pf_14netfilterqueue_6Packet_1__str__(PyObject *__pyx_v_se
  *     cdef set_nfq_data(self, nfq_q_handle *qh, nfq_data *nfa):
  */
   __Pyx_XDECREF(__pyx_r);
-  __pyx_t_1 = PyInt_FromSsize_t(((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_v_self)->payload_len); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 45; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyInt_FromSsize_t(((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_v_self)->payload_len); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 44; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_3 = PyTuple_New(2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 45; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyTuple_New(2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 44; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_3));
   __Pyx_INCREF(__pyx_v_protocol);
   PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_v_protocol);
@@ -1378,7 +1375,7 @@ static PyObject *__pyx_pf_14netfilterqueue_6Packet_1__str__(PyObject *__pyx_v_se
   PyTuple_SET_ITEM(__pyx_t_3, 1, __pyx_t_1);
   __Pyx_GIVEREF(__pyx_t_1);
   __pyx_t_1 = 0;
-  __pyx_t_1 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_2), ((PyObject *)__pyx_t_3)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 45; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_2), ((PyObject *)__pyx_t_3)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 44; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_1));
   __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
   __pyx_r = ((PyObject *)__pyx_t_1);
@@ -1400,7 +1397,7 @@ static PyObject *__pyx_pf_14netfilterqueue_6Packet_1__str__(PyObject *__pyx_v_se
   return __pyx_r;
 }
 
-/* "netfilterqueue.pyx":47
+/* "netfilterqueue.pyx":46
  *         return "%s packet, %s bytes" % (protocol, self.payload_len)
  * 
  *     cdef set_nfq_data(self, nfq_q_handle *qh, nfq_data *nfa):             # <<<<<<<<<<<<<<
@@ -1418,7 +1415,7 @@ static PyObject *__pyx_f_14netfilterqueue_6Packet_set_nfq_data(struct __pyx_obj_
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("set_nfq_data");
 
-  /* "netfilterqueue.pyx":52
+  /* "netfilterqueue.pyx":51
  *         local values.
  *         """
  *         self._qh = qh             # <<<<<<<<<<<<<<
@@ -1427,7 +1424,7 @@ static PyObject *__pyx_f_14netfilterqueue_6Packet_set_nfq_data(struct __pyx_obj_
  */
   __pyx_v_self->_qh = __pyx_v_qh;
 
-  /* "netfilterqueue.pyx":53
+  /* "netfilterqueue.pyx":52
  *         """
  *         self._qh = qh
  *         self._nfa = nfa             # <<<<<<<<<<<<<<
@@ -1436,7 +1433,7 @@ static PyObject *__pyx_f_14netfilterqueue_6Packet_set_nfq_data(struct __pyx_obj_
  */
   __pyx_v_self->_nfa = __pyx_v_nfa;
 
-  /* "netfilterqueue.pyx":54
+  /* "netfilterqueue.pyx":53
  *         self._qh = qh
  *         self._nfa = nfa
  *         self._hdr = nfq_get_msg_packet_hdr(nfa)             # <<<<<<<<<<<<<<
@@ -1445,7 +1442,7 @@ static PyObject *__pyx_f_14netfilterqueue_6Packet_set_nfq_data(struct __pyx_obj_
  */
   __pyx_v_self->_hdr = nfq_get_msg_packet_hdr(__pyx_v_nfa);
 
-  /* "netfilterqueue.pyx":56
+  /* "netfilterqueue.pyx":55
  *         self._hdr = nfq_get_msg_packet_hdr(nfa)
  * 
  *         self.id = ntohl(self._hdr.packet_id)             # <<<<<<<<<<<<<<
@@ -1454,7 +1451,7 @@ static PyObject *__pyx_f_14netfilterqueue_6Packet_set_nfq_data(struct __pyx_obj_
  */
   __pyx_v_self->id = ntohl(__pyx_v_self->_hdr->packet_id);
 
-  /* "netfilterqueue.pyx":57
+  /* "netfilterqueue.pyx":56
  * 
  *         self.id = ntohl(self._hdr.packet_id)
  *         self.hw_protocol = ntohs(self._hdr.hw_protocol)             # <<<<<<<<<<<<<<
@@ -1463,7 +1460,7 @@ static PyObject *__pyx_f_14netfilterqueue_6Packet_set_nfq_data(struct __pyx_obj_
  */
   __pyx_v_self->hw_protocol = ntohs(__pyx_v_self->_hdr->hw_protocol);
 
-  /* "netfilterqueue.pyx":58
+  /* "netfilterqueue.pyx":57
  *         self.id = ntohl(self._hdr.packet_id)
  *         self.hw_protocol = ntohs(self._hdr.hw_protocol)
  *         self.hook = self._hdr.hook             # <<<<<<<<<<<<<<
@@ -1472,7 +1469,7 @@ static PyObject *__pyx_f_14netfilterqueue_6Packet_set_nfq_data(struct __pyx_obj_
  */
   __pyx_v_self->hook = __pyx_v_self->_hdr->hook;
 
-  /* "netfilterqueue.pyx":60
+  /* "netfilterqueue.pyx":59
  *         self.hook = self._hdr.hook
  * 
  *         self.payload_len = nfq_get_payload(self._nfa, &self.payload)             # <<<<<<<<<<<<<<
@@ -1481,7 +1478,7 @@ static PyObject *__pyx_f_14netfilterqueue_6Packet_set_nfq_data(struct __pyx_obj_
  */
   __pyx_v_self->payload_len = nfq_get_payload(__pyx_v_self->_nfa, (&__pyx_v_self->payload));
 
-  /* "netfilterqueue.pyx":61
+  /* "netfilterqueue.pyx":60
  * 
  *         self.payload_len = nfq_get_payload(self._nfa, &self.payload)
  *         if self.payload_len < 0:             # <<<<<<<<<<<<<<
@@ -1491,23 +1488,23 @@ static PyObject *__pyx_f_14netfilterqueue_6Packet_set_nfq_data(struct __pyx_obj_
   __pyx_t_1 = (__pyx_v_self->payload_len < 0);
   if (__pyx_t_1) {
 
-    /* "netfilterqueue.pyx":62
+    /* "netfilterqueue.pyx":61
  *         self.payload_len = nfq_get_payload(self._nfa, &self.payload)
  *         if self.payload_len < 0:
  *             raise OSError("Failed to get payload of packet.")             # <<<<<<<<<<<<<<
  * 
  *         nfq_get_timestamp(self._nfa, &self.timestamp)
  */
-    __pyx_t_2 = PyObject_Call(__pyx_builtin_OSError, ((PyObject *)__pyx_k_tuple_4), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyObject_Call(__pyx_builtin_OSError, ((PyObject *)__pyx_k_tuple_4), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     __Pyx_Raise(__pyx_t_2, 0, 0, 0);
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-    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "netfilterqueue.pyx":64
+  /* "netfilterqueue.pyx":63
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 }
 
-/* "netfilterqueue.pyx":66
+/* "netfilterqueue.pyx":65
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-  /* "netfilterqueue.pyx":68
+  /* "netfilterqueue.pyx":67
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-    /* "netfilterqueue.pyx":69
+    /* "netfilterqueue.pyx":68
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-    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 69; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 68; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "netfilterqueue.pyx":71
+  /* "netfilterqueue.pyx":70
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  *         cdef u_int32_t modified_payload_len = 0             # <<<<<<<<<<<<<<
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  */
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-  /* "netfilterqueue.pyx":72
+  /* "netfilterqueue.pyx":71
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  *         cdef u_int32_t modified_payload_len = 0
  *         cdef unsigned char *modified_payload = NULL             # <<<<<<<<<<<<<<
@@ -1592,7 +1589,7 @@ static void __pyx_f_14netfilterqueue_6Packet_verdict(struct __pyx_obj_14netfilte
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-  /* "netfilterqueue.pyx":73
+  /* "netfilterqueue.pyx":72
  *         cdef u_int32_t modified_payload_len = 0
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+    /* "netfilterqueue.pyx":73
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+      PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()"); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 73; __pyx_clineno = __LINE__; goto __pyx_L1_error;} 
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-    /* "netfilterqueue.pyx":75
+    /* "netfilterqueue.pyx":74
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+    __pyx_t_4 = __Pyx_PyBytes_AsUString(((PyObject *)__pyx_v_self->_given_payload)); if (unlikely((!__pyx_t_4) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 74; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "netfilterqueue.pyx":76
+  /* "netfilterqueue.pyx":75
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-    /* "netfilterqueue.pyx":84
+    /* "netfilterqueue.pyx":83
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-    /* "netfilterqueue.pyx":91
+    /* "netfilterqueue.pyx":90
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-  /* "netfilterqueue.pyx":93
+  /* "netfilterqueue.pyx":92
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  *         self._verdict_is_set = True             # <<<<<<<<<<<<<<
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-/* "netfilterqueue.pyx":95
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-  /* "netfilterqueue.pyx":98
+  /* "netfilterqueue.pyx":97
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+  __pyx_t_1 = PyString_FromStringAndSize(((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_v_self)->payload, ((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_v_self)->payload_len); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 96; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "netfilterqueue.pyx":99
+  /* "netfilterqueue.pyx":98
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 }
 
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+      __pyx_t_3 = __Pyx_PyIndex_AsSsize_t(__pyx_t_2); if (unlikely((__pyx_t_3 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "netfilterqueue.pyx":102
+  /* "netfilterqueue.pyx":101
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  *     cpdef Py_ssize_t get_payload_len(self):
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 }
 
-/* "netfilterqueue.pyx":101
+/* "netfilterqueue.pyx":100
  *         return py_string
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  *     cpdef Py_ssize_t get_payload_len(self):             # <<<<<<<<<<<<<<
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+  __pyx_t_1 = PyInt_FromSsize_t(((struct __pyx_vtabstruct_14netfilterqueue_Packet *)((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_v_self)->__pyx_vtab)->get_payload_len(((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_v_self), 1)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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 }
 
-/* "netfilterqueue.pyx":104
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+    __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__get_timestamp); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_3 = __pyx_PyFloat_AsDouble(__pyx_t_2); if (unlikely((__pyx_t_3 == (double)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "netfilterqueue.pyx":105
+  /* "netfilterqueue.pyx":104
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  *     cpdef double get_timestamp(self):
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 }
 
-/* "netfilterqueue.pyx":104
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+  __pyx_t_1 = PyFloat_FromDouble(((struct __pyx_vtabstruct_14netfilterqueue_Packet *)((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_v_self)->__pyx_vtab)->get_timestamp(((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_v_self), 1)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   return __pyx_r;
 }
 
-/* "netfilterqueue.pyx":107
+/* "netfilterqueue.pyx":106
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-  /* "netfilterqueue.pyx":112
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+  /* "netfilterqueue.pyx":112
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-/* "netfilterqueue.pyx":111
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-/* "netfilterqueue.pyx":115
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+    __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__accept); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "netfilterqueue.pyx":117
+  /* "netfilterqueue.pyx":116
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 }
 
-/* "netfilterqueue.pyx":115
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+  __pyx_t_1 = ((struct __pyx_vtabstruct_14netfilterqueue_Packet *)((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_v_self)->__pyx_vtab)->accept(((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_v_self), 1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__drop); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "netfilterqueue.pyx":121
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-/* "netfilterqueue.pyx":119
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+  __pyx_t_1 = ((struct __pyx_vtabstruct_14netfilterqueue_Packet *)((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_v_self)->__pyx_vtab)->drop(((struct __pyx_obj_14netfilterqueue_Packet *)__pyx_v_self), 1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-/* "netfilterqueue.pyx":125
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-  /* "netfilterqueue.pyx":126
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+    PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%s'", "get"); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;} 
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+  __pyx_t_3 = __Pyx_PyInt_from_py_u_int16_t(__pyx_t_2); if (unlikely((__pyx_t_3 == (u_int16_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "netfilterqueue.pyx":128
+  /* "netfilterqueue.pyx":127
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-  /* "netfilterqueue.pyx":129
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-    /* "netfilterqueue.pyx":130
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-    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "netfilterqueue.pyx":131
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@@ -2584,7 +2581,7 @@ static int __pyx_pf_14netfilterqueue_14NetfilterQueue___cinit__(PyObject *__pyx_
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-  /* "netfilterqueue.pyx":133
+  /* "netfilterqueue.pyx":132
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-    /* "netfilterqueue.pyx":134
+    /* "netfilterqueue.pyx":133
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-    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-/* "netfilterqueue.pyx":136
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-    /* "netfilterqueue.pyx":138
+    /* "netfilterqueue.pyx":137
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-  /* "netfilterqueue.pyx":141
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@@ -2683,7 +2680,7 @@ static void __pyx_pf_14netfilterqueue_14NetfilterQueue_1__dealloc__(PyObject *__
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+          __Pyx_RaiseArgtupleInvalid("bind", 0, 2, 5, 1); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 142; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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@@ -2751,7 +2748,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_2bind(PyObject *__py
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+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, PyTuple_GET_SIZE(__pyx_args), "bind") < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 142; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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@@ -2764,34 +2761,34 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_2bind(PyObject *__py
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+      __pyx_v_max_len = __Pyx_PyInt_from_py_u_int32_t(values[2]); if (unlikely((__pyx_v_max_len == (u_int32_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 143; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+  __Pyx_RaiseArgtupleInvalid("bind", 0, 2, 5, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 142; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-  /* "netfilterqueue.pyx":148
+  /* "netfilterqueue.pyx":147
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  *         self.user_callback = user_callback             # <<<<<<<<<<<<<<
@@ -2804,7 +2801,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_2bind(PyObject *__py
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-  /* "netfilterqueue.pyx":149
+  /* "netfilterqueue.pyx":148
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@@ -2813,7 +2810,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_2bind(PyObject *__py
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-  /* "netfilterqueue.pyx":151
+  /* "netfilterqueue.pyx":150
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@@ -2823,34 +2820,34 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_2bind(PyObject *__py
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-    /* "netfilterqueue.pyx":152
+    /* "netfilterqueue.pyx":151
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+    __pyx_t_3 = PyObject_Call(__pyx_builtin_OSError, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 151; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 152; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 151; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "netfilterqueue.pyx":154
+  /* "netfilterqueue.pyx":153
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-    /* "netfilterqueue.pyx":155
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  *         if range > MaxCopySize:
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-  /* "netfilterqueue.pyx":156
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@@ -2882,23 +2879,23 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_2bind(PyObject *__py
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-    /* "netfilterqueue.pyx":157
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-    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 157; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 156; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "netfilterqueue.pyx":159
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-/* "netfilterqueue.pyx":161
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-  /* "netfilterqueue.pyx":163
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-    /* "netfilterqueue.pyx":164
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@@ -2964,7 +2961,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_3unbind(PyObject *__
   return __pyx_r;
 }
 
-/* "netfilterqueue.pyx":167
+/* "netfilterqueue.pyx":166
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  * 
  *     def run(self):             # <<<<<<<<<<<<<<
@@ -2983,7 +2980,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_4run(PyObject *__pyx
   int __pyx_t_1;
   __Pyx_RefNannySetupContext("run");
 
-  /* "netfilterqueue.pyx":169
+  /* "netfilterqueue.pyx":168
  *     def run(self):
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  *         cdef int fd = nfq_fd(self.h)             # <<<<<<<<<<<<<<
@@ -2992,7 +2989,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_4run(PyObject *__pyx
  */
   __pyx_v_fd = nfq_fd(((struct __pyx_obj_14netfilterqueue_NetfilterQueue *)__pyx_v_self)->h);
 
-  /* "netfilterqueue.pyx":172
+  /* "netfilterqueue.pyx":171
  *         cdef char buf[BufferSize]
  *         cdef int rv
  *         with nogil:             # <<<<<<<<<<<<<<
@@ -3006,7 +3003,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_4run(PyObject *__pyx
       Py_UNBLOCK_THREADS
       /*try:*/ {
 
-        /* "netfilterqueue.pyx":173
+        /* "netfilterqueue.pyx":172
  *         cdef int rv
  *         with nogil:
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@@ -3016,7 +3013,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_4run(PyObject *__pyx
         __pyx_v_rv = recv(__pyx_v_fd, __pyx_v_buf, (sizeof(__pyx_v_buf)), 0);
       }
 
-      /* "netfilterqueue.pyx":172
+      /* "netfilterqueue.pyx":171
  *         cdef char buf[BufferSize]
  *         cdef int rv
  *         with nogil:             # <<<<<<<<<<<<<<
@@ -3028,7 +3025,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_4run(PyObject *__pyx
       }
   }
 
-  /* "netfilterqueue.pyx":174
+  /* "netfilterqueue.pyx":173
  *         with nogil:
  *             rv = recv(fd, buf, sizeof(buf), 0)
  *         while rv >= 0:             # <<<<<<<<<<<<<<
@@ -3039,7 +3036,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_4run(PyObject *__pyx
     __pyx_t_1 = (__pyx_v_rv >= 0);
     if (!__pyx_t_1) break;
 
-    /* "netfilterqueue.pyx":175
+    /* "netfilterqueue.pyx":174
  *             rv = recv(fd, buf, sizeof(buf), 0)
  *         while rv >= 0:
  *             nfq_handle_packet(self.h, buf, rv)             # <<<<<<<<<<<<<<
@@ -3048,7 +3045,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_4run(PyObject *__pyx
  */
     nfq_handle_packet(((struct __pyx_obj_14netfilterqueue_NetfilterQueue *)__pyx_v_self)->h, __pyx_v_buf, __pyx_v_rv);
 
-    /* "netfilterqueue.pyx":176
+    /* "netfilterqueue.pyx":175
  *         while rv >= 0:
  *             nfq_handle_packet(self.h, buf, rv)
  *             with nogil:             # <<<<<<<<<<<<<<
@@ -3062,7 +3059,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_4run(PyObject *__pyx
         Py_UNBLOCK_THREADS
         /*try:*/ {
 
-          /* "netfilterqueue.pyx":177
+          /* "netfilterqueue.pyx":176
  *             nfq_handle_packet(self.h, buf, rv)
  *             with nogil:
  *                 rv = recv(fd, buf, sizeof(buf), 0)             # <<<<<<<<<<<<<<
@@ -3072,7 +3069,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_4run(PyObject *__pyx
           __pyx_v_rv = recv(__pyx_v_fd, __pyx_v_buf, (sizeof(__pyx_v_buf)), 0);
         }
 
-        /* "netfilterqueue.pyx":176
+        /* "netfilterqueue.pyx":175
  *         while rv >= 0:
  *             nfq_handle_packet(self.h, buf, rv)
  *             with nogil:             # <<<<<<<<<<<<<<
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 static int __Pyx_InitCachedBuiltins(void) {
-  __pyx_builtin_OSError = __Pyx_GetName(__pyx_b, __pyx_n_s__OSError); if (!__pyx_builtin_OSError) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_builtin_RuntimeWarning = __Pyx_GetName(__pyx_b, __pyx_n_s__RuntimeWarning); if (!__pyx_builtin_RuntimeWarning) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 69; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_builtin_OSError = __Pyx_GetName(__pyx_b, __pyx_n_s__OSError); if (!__pyx_builtin_OSError) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_builtin_RuntimeWarning = __Pyx_GetName(__pyx_b, __pyx_n_s__RuntimeWarning); if (!__pyx_builtin_RuntimeWarning) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 68; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -3738,77 +3735,77 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__Pyx_InitCachedConstants");
 
-  /* "netfilterqueue.pyx":62
+  /* "netfilterqueue.pyx":61
  *         self.payload_len = nfq_get_payload(self._nfa, &self.payload)
  *         if self.payload_len < 0:
  *             raise OSError("Failed to get payload of packet.")             # <<<<<<<<<<<<<<
  * 
  *         nfq_get_timestamp(self._nfa, &self.timestamp)
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-  __pyx_k_tuple_4 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_4 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_INCREF(((PyObject *)__pyx_kp_s_3));
   PyTuple_SET_ITEM(__pyx_k_tuple_4, 0, ((PyObject *)__pyx_kp_s_3));
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_3));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_4));
 
-  /* "netfilterqueue.pyx":69
+  /* "netfilterqueue.pyx":68
  *         """Call appropriate set_verdict... function on packet."""
  *         if self._verdict_is_set:
  *             raise RuntimeWarning("Verdict already given for this packet.")             # <<<<<<<<<<<<<<
  * 
  *         cdef u_int32_t modified_payload_len = 0
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-  __pyx_k_tuple_6 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 69; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_6 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 68; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_k_tuple_6));
   __Pyx_INCREF(((PyObject *)__pyx_kp_s_5));
   PyTuple_SET_ITEM(__pyx_k_tuple_6, 0, ((PyObject *)__pyx_kp_s_5));
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_5));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_6));
 
-  /* "netfilterqueue.pyx":130
+  /* "netfilterqueue.pyx":129
  *         self.h = nfq_open()
  *         if self.h == NULL:
  *             raise OSError("Failed to open NFQueue.")             # <<<<<<<<<<<<<<
  *         nfq_unbind_pf(self.h, self.af) # This does NOT kick out previous
  *             # running queues
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-  __pyx_k_tuple_8 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_8)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_8 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_8)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_7));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_8));
 
-  /* "netfilterqueue.pyx":157
+  /* "netfilterqueue.pyx":156
  *             range = MaxCopySize
  *         if nfq_set_mode(self.qh, mode, range) < 0:
  *             raise OSError("Failed to set packet copy mode.")             # <<<<<<<<<<<<<<
  * 
  *         nfq_set_queue_maxlen(self.qh, max_len)
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-  __pyx_k_tuple_14 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_14)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 157; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_14 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_14)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 156; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_k_tuple_14));
   __Pyx_INCREF(((PyObject *)__pyx_kp_s_13));
   PyTuple_SET_ITEM(__pyx_k_tuple_14, 0, ((PyObject *)__pyx_kp_s_13));
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_13));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_14));
 
-  /* "netfilterqueue.pyx":9
+  /* "netfilterqueue.pyx":8
+ * License: MIT; see LICENSE.txt
  * """
- * from libc.string cimport strlen
- * VERSION = (0, 3, 0)             # <<<<<<<<<<<<<<
+ * VERSION = (0, 4, 0)             # <<<<<<<<<<<<<<
  * 
  * # Constants for module users
  */
-  __pyx_k_tuple_16 = PyTuple_New(3); if (unlikely(!__pyx_k_tuple_16)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 9; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_16 = PyTuple_New(3); if (unlikely(!__pyx_k_tuple_16)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 8; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_INCREF(__pyx_int_0);
   PyTuple_SET_ITEM(__pyx_k_tuple_16, 0, __pyx_int_0);
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-  __Pyx_INCREF(__pyx_int_3);
-  PyTuple_SET_ITEM(__pyx_k_tuple_16, 1, __pyx_int_3);
-  __Pyx_GIVEREF(__pyx_int_3);
+  __Pyx_INCREF(__pyx_int_4);
+  PyTuple_SET_ITEM(__pyx_k_tuple_16, 1, __pyx_int_4);
+  __Pyx_GIVEREF(__pyx_int_4);
   __Pyx_INCREF(__pyx_int_0);
   PyTuple_SET_ITEM(__pyx_k_tuple_16, 2, __pyx_int_0);
   __Pyx_GIVEREF(__pyx_int_0);
@@ -4039,77 +4036,77 @@ PyMODINIT_FUNC PyInit_netfilterqueue(void)
   __pyx_vtable_14netfilterqueue_Packet.set_mark = (PyObject *(*)(struct __pyx_obj_14netfilterqueue_Packet *, u_int32_t, int __pyx_skip_dispatch))__pyx_f_14netfilterqueue_6Packet_set_mark;
   __pyx_vtable_14netfilterqueue_Packet.accept = (PyObject *(*)(struct __pyx_obj_14netfilterqueue_Packet *, int __pyx_skip_dispatch))__pyx_f_14netfilterqueue_6Packet_accept;
   __pyx_vtable_14netfilterqueue_Packet.drop = (PyObject *(*)(struct __pyx_obj_14netfilterqueue_Packet *, int __pyx_skip_dispatch))__pyx_f_14netfilterqueue_6Packet_drop;
-  if (PyType_Ready(&__pyx_type_14netfilterqueue_Packet) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 35; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetVtable(__pyx_type_14netfilterqueue_Packet.tp_dict, __pyx_vtabptr_14netfilterqueue_Packet) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 35; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "Packet", (PyObject *)&__pyx_type_14netfilterqueue_Packet) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 35; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_14netfilterqueue_Packet) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetVtable(__pyx_type_14netfilterqueue_Packet.tp_dict, __pyx_vtabptr_14netfilterqueue_Packet) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "Packet", (PyObject *)&__pyx_type_14netfilterqueue_Packet) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 34; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_14netfilterqueue_Packet = &__pyx_type_14netfilterqueue_Packet;
-  if (PyType_Ready(&__pyx_type_14netfilterqueue_NetfilterQueue) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 123; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "NetfilterQueue", (PyObject *)&__pyx_type_14netfilterqueue_NetfilterQueue) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 123; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_14netfilterqueue_NetfilterQueue) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 122; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "NetfilterQueue", (PyObject *)&__pyx_type_14netfilterqueue_NetfilterQueue) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 122; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_14netfilterqueue_NetfilterQueue = &__pyx_type_14netfilterqueue_NetfilterQueue;
   /*--- Type import code ---*/
   /*--- Variable import code ---*/
   /*--- Function import code ---*/
   /*--- Execution code ---*/
 
-  /* "netfilterqueue.pyx":9
+  /* "netfilterqueue.pyx":8
+ * License: MIT; see LICENSE.txt
  * """
- * from libc.string cimport strlen
- * VERSION = (0, 3, 0)             # <<<<<<<<<<<<<<
+ * VERSION = (0, 4, 0)             # <<<<<<<<<<<<<<
  * 
  * # Constants for module users
  */
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__VERSION, ((PyObject *)__pyx_k_tuple_16)) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 9; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__VERSION, ((PyObject *)__pyx_k_tuple_16)) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 8; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "netfilterqueue.pyx":12
+  /* "netfilterqueue.pyx":11
  * 
  * # Constants for module users
  * COPY_NONE = 1             # <<<<<<<<<<<<<<
  * COPY_META = 2
  * COPY_PACKET = 3
  */
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__COPY_NONE, __pyx_int_1) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 12; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__COPY_NONE, __pyx_int_1) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 11; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "netfilterqueue.pyx":13
+  /* "netfilterqueue.pyx":12
  * # Constants for module users
  * COPY_NONE = 1
  * COPY_META = 2             # <<<<<<<<<<<<<<
  * COPY_PACKET = 3
  * 
  */
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__COPY_META, __pyx_int_2) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 13; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__COPY_META, __pyx_int_2) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 12; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "netfilterqueue.pyx":14
+  /* "netfilterqueue.pyx":13
  * COPY_NONE = 1
  * COPY_META = 2
  * COPY_PACKET = 3             # <<<<<<<<<<<<<<
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  * DEFAULT_MAX_QUEUELEN = 1024
  */
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__COPY_PACKET, __pyx_int_3) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 14; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__COPY_PACKET, __pyx_int_3) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 13; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "netfilterqueue.pyx":16
+  /* "netfilterqueue.pyx":15
  * COPY_PACKET = 3
  * 
  * DEFAULT_MAX_QUEUELEN = 1024             # <<<<<<<<<<<<<<
  * 
  * # Packet copying defaults
  */
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_17, __pyx_int_1024) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 16; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s_17, __pyx_int_1024) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "netfilterqueue.pyx":144
+  /* "netfilterqueue.pyx":143
  * 
  *     def bind(self, int queue_num, object user_callback,
  *                 u_int32_t max_len=DEFAULT_MAX_QUEUELEN,             # <<<<<<<<<<<<<<
  *                 u_int8_t mode=NFQNL_COPY_PACKET,
  *                 u_int32_t range=MaxPacketSize):
  */
-  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s_17); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 144; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s_17); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = __Pyx_PyInt_from_py_u_int32_t(__pyx_t_1); if (unlikely((__pyx_t_2 == (u_int32_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 144; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = __Pyx_PyInt_from_py_u_int32_t(__pyx_t_1); if (unlikely((__pyx_t_2 == (u_int32_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   __pyx_k_10 = __pyx_t_2;
 
-  /* "netfilterqueue.pyx":145
+  /* "netfilterqueue.pyx":144
  *     def bind(self, int queue_num, object user_callback,
  *                 u_int32_t max_len=DEFAULT_MAX_QUEUELEN,
  *                 u_int8_t mode=NFQNL_COPY_PACKET,             # <<<<<<<<<<<<<<
@@ -4118,158 +4115,158 @@ PyMODINIT_FUNC PyInit_netfilterqueue(void)
  */
   __pyx_k_11 = NFQNL_COPY_PACKET;
 
-  /* "netfilterqueue.pyx":179
+  /* "netfilterqueue.pyx":178
  *                 rv = recv(fd, buf, sizeof(buf), 0)
  * 
  * PROTOCOLS = {             # <<<<<<<<<<<<<<
  *     0: "HOPOPT",
  *     1: "ICMP",
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-  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 179; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 178; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_1));
-  if (PyDict_SetItem(__pyx_t_1, __pyx_int_0, ((PyObject *)__pyx_n_s__HOPOPT)) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 179; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   /* "netfilterqueue.pyx":1
diff --git a/netfilterqueue.pyx b/netfilterqueue.pyx
index 5c93a9b..362fff5 100644
--- a/netfilterqueue.pyx
+++ b/netfilterqueue.pyx
@@ -5,8 +5,7 @@ function.
 Copyright: (c) 2011, Kerkhoff Technologies Inc.
 License: MIT; see LICENSE.txt
 """
-from libc.string cimport strlen
-VERSION = (0, 3, 0)
+VERSION = (0, 4, 0)
 
 # Constants for module users
 COPY_NONE = 1
diff --git a/setup.py b/setup.py
index f0a56a4..86de016 100644
--- a/setup.py
+++ b/setup.py
@@ -1,6 +1,6 @@
 from distutils.core import setup, Extension
 
-VERSION = "0.3" # Remember to change README.rst when version changes.
+VERSION = "0.4" # Remember to change README.rst when version changes.
 
 try:
     # Use Cython