[  256.819910][    C0] TCP: AO hash mismatch for [2001:db8:1::1].59868->[2001:db8:254::1].7013 [P.]L3index: 0
[  256.820998][    C0] TCP: AO hash mismatch for [2001:db8:1::1].59868->[2001:db8:254::1].7013 [.]L3index: 0
[  257.842926][    C2] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].43548 [P.]L3index: 0
[  257.843439][    C2] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].43548 [.]L3index: 0
[  260.477379][    C1] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.