[Bug] tcpreplay-edit with --fixcsum crushing IP header when there is a VLAN tag #583
Description
Take any IPv4 packet with a VLAN header. Ask tcpreplay-edit to fix the checksums. The IP header's flags field is crushed by the edit.
Start
tcpdump -i ethX -w /tmp/result.pcap in one window.
In another window, play the attached pcap with
tcpreplay-edit -i ethX --fixcsum vlan1pkt.pcap
Kill tcpdump and use wireshark/tshark to examine the packet. See that the IPv4 Flags field has been overwritten with garbage (the checksum value).