BPF filter for tcp syn for ipv6

[Ritesh Rekhi <rrekhi () brocade com>]

Hi all,

I want to filter TCp syn packet which is coming using IPv6 addresses. I am not able to find the bpf filter for that can 
somebody help me to find the right BPF filter


I have already tried" tcp[tcpflags] & (tcp-syn) != 0" which doesn't work for IPv6 traffic.

Thanks
Ritesh

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