nft 0.8.2
since I am struggling a bit with the syntax for l4proto bridge filtering
I would hope someone could point me in the right direction. Perhaps I am
suffering a misconception about level 4 filtering - is bridge filtering
at level 2, similar like netdev and thus not working with transport
headers at level 2?
nft add rule bridge filter input meta l4proto { tcp, udp } @th,16,16 53
accept
is producing
Error: conflicting protocols specified: inet-service vs. unknown
add rule bridge filter input meta l4proto { tcp, udp } @th,16,16 53 accept
^^^^^^^^^
Neither the nft wiki nor man pages explaining/expanding on @th,16,16 -
is it a hard coded set - indicated by @? th is likely abbreviating
transport header? What about 16,16?
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