Same as matching tcp packets:how can I filter IPsec traffic with u32 filters? I know IPsec needs Port 500/UDP and IP protocols 50 and 51. I know how to get the port stuff, but how can I make u32 to match the protocol number?
match ip protocol 0x32 0xff (ESP proto 50) or match ip protocol 0x33 0xff (AH proto 51)
regards
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