[  246.058878][    C2] TCP: AO hash mismatch for [2001:db8:1::1].52432->[2001:db8:254::1].7013 [P.]L3index: 0
[  246.059242][    C1] TCP: AO hash mismatch for [2001:db8:1::1].52432->[2001:db8:254::1].7013 [.]L3index: 0
[  247.083029][    C2] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].58052 [P.]L3index: 0
[  247.084042][    C3] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].58052 [.]L3index: 0
[  248.762101][    C1] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.