-pcap Network Type 276 Unknown Or Unsupported- -

The error message "pcap: network type 276 unknown or unsupported" refers to the LINKTYPE_LINUX_SLL2 header format, which was introduced to replace the older LINKTYPE_LINUX_SLL (Linux cooked capture) format.

Just ran into this error while trying to process a PCAP file: -pcap network type 276 unknown or unsupported-

editcap -T 1 input.pcap output.pcap

For example:

Incomplete System Repositories: Default repositories on older LTS versions of Linux (like Ubuntu 20.04) often provide versions of Wireshark that lack this support . How to Resolve the Error The error message "pcap: network type 276 unknown