[  255.323782][    C2] TCP: AO hash mismatch for [2001:db8:254::1].7011->[2001:db8:1::1].57668 [P.]L3index: 0
[  255.324920][    C2] TCP: AO hash mismatch for [2001:db8:1::1].57668->[2001:db8:254::1].7011 [P.]L3index: 0
[  256.346522][    C3] TCP: AO hash mismatch for [2001:db8:254::1].7012->[2001:db8:1::1].55364 [P.]L3index: 0
[  256.347133][    C3] TCP: AO hash mismatch for [2001:db8:1::1].55364->[2001:db8:254::1].7012 [P.]L3index: 0
[  257.057440][    C2] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.
[  257.370868][    C3] TCP: AO hash mismatch for [2001:db8:1::1].38966->[2001:db8:254::1].7013 [P.]L3index: 0
[  257.371429][    C3] TCP: AO hash mismatch for [2001:db8:1::1].38966->[2001:db8:254::1].7013 [.]L3index: 0