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the-tcpdump-group / libpcap

the LIBpcap interface to various kernel packet capture mechanism
https://www.tcpdump.org/
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vn-tag support required for bpf #770

Open fifeclub opened 6 years ago

fifeclub commented 6 years ago

vn-tag comes after ethernet dst map and before vlan tags. It's 6 bytes long and there is no easy way to skip it with existing bpf. It would be good to add a vntag keyword that can skip 6 bytes like vlan skips 4.

infrastation commented 2 years ago

Here is a packet diagram for the tag.

infrastation commented 1 day ago

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