The error message "pcap: network type 276 unknown or unsupported" typically indicates that the software you are using (such as Wireshark or TShark) is outdated and cannot recognize the LINKTYPE_LINUX_SLL2 data link type . Understanding Network Type 276
sudo add-apt-repository ppa:wireshark-dev/stable sudo apt-get update sudo apt-get install wireshark Use code with caution. Copied to clipboard -pcap network type 276 unknown or unsupported-
If you've encountered the error message "-pcap network type 276 unknown or unsupported-" , it usually means The error message "pcap: network type 276 unknown
Quick test: try opening with tshark and forcing raw payload as Ethernet (if you suspect it is Ethernet with extra header): Copied to clipboard Update Arkime or Zeek If
sudo add-apt-repository ppa:wireshark-dev/stable sudo apt-get update sudo apt-get upgrade wireshark Use code with caution. Copied to clipboard Update Arkime or Zeek If you are seeing this error in other tools like Arkime (formerly Moloch)
If you encounter DLT 276 during an investigation: