[  237.868273][    C3] TCP: AO hash mismatch for [2001:db8:1::1].42544->[2001:db8:254::1].7012 [P.]L3index: 0
[  237.868793][    C3] TCP: AO hash mismatch for [2001:db8:254::1].7012->[2001:db8:1::1].42544 [P.]L3index: 0
[  238.892612][    C3] TCP: AO hash mismatch for [2001:db8:1::1].54594->[2001:db8:254::1].7013 [P.]L3index: 0
[  238.893187][    C3] TCP: AO hash mismatch for [2001:db8:1::1].54594->[2001:db8:254::1].7013 [.]L3index: 0
[  239.916278][    C2] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].54488 [.]L3index: 0
[  239.916811][    C0] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].54488 [P.]L3index: 0
[  241.190686][    C0] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.