Resend udp packet to another host using pcap

pypresender.py

#!/usr/bin/env python

import pcap
import socket

from scapy.all import *
conf.use_pcap=True # because by default scapy try to use raw socket and can't assign bpf filter
conf.verb=0        # it just grab all traffic and get error on processing
import scapy.arch.pcapdnet

send_to_address = "192.168.0.5"
send_to_port = 2055
bpf_filter="udp and dst port 9996"
iface="eth0"

def resend_action(p):
    newpkt = craft_packet(p)   
    newpkt[IP].dst = send_to_address
    newpkt[UDP].dport = send_to_port
    send(newpkt[IP])

def craft_packet(pkt):
    # make new packet based on original packet
    newpkt = Ether()/\
             IP(src=pkt[IP].src, dst=pkt[IP].dst, id=pkt[IP].id)/\
             UDP(sport=pkt[UDP].sport, dport=pkt[UDP].dport)/\
             Raw(load=pkt[Raw].load)
    return newpkt

while 1:
    sniff(filter=bpf_filter, iface=iface, prn=resend_action, store=0, promisc=False)