-pcap Network Type 276 Unknown Or Unsupported- May 2026

If you've encountered the error message "-pcap network type 276 unknown or unsupported-" , it usually means

Then, in Scapy, force the DLT:

Set your capture tool to a standard DLT if possible. For example, in tcpdump: -pcap network type 276 unknown or unsupported-

sudo add-apt-repository ppa:wireshark-dev/stable sudo apt-get update sudo apt-get upgrade wireshark Use code with caution. Copied to clipboard If you've encountered the error message "-pcap network

If the original data was Linux SLL (Type 113): it usually means Then

Title: The Silent Failure: Understanding "Network Type 276 Unknown or Unsupported" in PCAP Analysis

Part 3: How to Diagnose the Problem

Before you fix the error, confirm exactly what is inside your file.

from scapy.all import rdpcap, wrpcap, Raw
pkts = rdpcap("in.pcap")
out = []
for p in pkts:
    b = bytes(p)[4:]
    out.append(Raw(b))
wrpcap("out.pcap", out)