Wireshark · Wireshark-users: [Wireshark-users] why does wireshark believe that libpcap has a 65535 max packet size?

[Sam Roberts <vieuxtech@xxxxxxxxx>]

See definiton of WTAP_MAX_PACKET_SIZE, and use in wiretap/libpcap.c.

Seems to me it should be checking this (untested):

  if (hdr->hdr.incl_len > wth->snapshot_length) { // not WTAP_MAX_PACKET_SIZE!

Attached file can be read by tcpdump, but wireshark chokes on it.

And yes, the IP and TCP packets are fake/invalid, but the pcap is valid!

Cheers,
Sam

Attachment: _.pcap.zip
Description: Zip archive