[  247.596902][    C3] TCP: AO hash mismatch for [2001:db8:1::1].33226->[2001:db8:254::1].7013 [P.]L3index: 0
[  247.597661][    C2] TCP: AO hash mismatch for [2001:db8:1::1].33226->[2001:db8:254::1].7013 [.]L3index: 0
[  248.622355][    C2] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].58710 [.]L3index: 0
[  249.132933][    C1] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].58710 [P.]L3index: 0
[  250.558856][    C3] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.