[  249.643623][    C3] TCP: AO hash mismatch for [2001:db8:1::1].60336->[2001:db8:254::1].7013 [.]L3index: 0
[  250.155191][    C1] TCP: AO hash mismatch for [2001:db8:1::1].60336->[2001:db8:254::1].7013 [P.]L3index: 0
[  251.178383][    C2] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].60944 [P.]L3index: 0
[  251.179606][    C1] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].60944 [.]L3index: 0
[  252.504662][    C2] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.