Remove the exported PDU layer and replace the IPv6 source/destination addresses from a pcap file

conv-exported-pdu.py

#!/usr/bin/env python3

import sys

from scapy.utils import rdpcap, wrpcap
from scapy.all import IPv6, UDP


def main():
    packets = []

    for exported_pdu in rdpcap(sys.argv[1]):
        pkt = IPv6(exported_pdu.load[52:])
        pkt.time = exported_pdu.time
        pkt[IPv6].src = sys.argv[3]
        pkt[IPv6].dst = sys.argv[4]
        del pkt[IPv6][UDP].chksum
        packets.append(pkt)

    wrpcap(sys.argv[2], packets)
    sys.exit(0)


if __name__ == "__main__":
    main()