-pcap Network Type 276 Unknown Or Unsupported- Jun 2026

Network type corresponds to LINKTYPE_LINUX_SLL2 , the updated Linux "cooked" capture encapsulation (v2).

If you need a custom solution, Scapy (with pcapng support) can read type 276: -pcap network type 276 unknown or unsupported-

: The most direct fix is to update your analysis software. For example, upgrading Wireshark to version 3.6 or later typically resolves the issue. Network type corresponds to LINKTYPE_LINUX_SLL2

Wireshark's editcap tool can change the DLT of a pcap file without altering the packet data. Only do this if you are certain of the true link-layer type. -pcap network type 276 unknown or unsupported-

Has anyone run into this specific type before? Is there a dd command or a wiretap setting I can use to strip the header and view the payload?