-pcap Network Type 276 Unknown Or Unsupported- -

Or perhaps a variant: pcap_open_offline: network type 276 unknown or unsupported

-pcap network type 276 unknown or unsupported- -pcap network type 276 unknown or unsupported-

You run a command—perhaps a custom tcpdump filter, a tcpslice extraction, or a specialized fuzzer—and the terminal spits out: Or perhaps a variant: pcap_open_offline: network type 276

file suspicious.pcap capinfos suspicious.pcap Look for the line: Step 2: Hexdump the First Few Packets View the raw bytes. Your tool cannot parse it, but you can: a tcpslice extraction

from scapy.all import * packets = rdpcap("broken_type276.pcap") # Scapy may ignore DLT and guess wrpcap("fixed.pcap", packets, linktype=1) # Force Ethernet If you absolutely need to preserve DLT 276 because you are writing a custom dissector, you can modify pcap-common.c in the libpcap source. Add an entry to the dlt_to_linktype array: