[  254.836966][    C3] TCP: AO hash mismatch for [2001:db8:1::1].55284->[2001:db8:254::1].7011 [P.]L3index: 0
[  254.837911][    C3] TCP: AO hash mismatch for [2001:db8:254::1].7011->[2001:db8:1::1].55284 [P.]L3index: 0
[  255.860205][    C2] TCP: AO hash mismatch for [2001:db8:254::1].7012->[2001:db8:1::1].49818 [P.]L3index: 0
[  255.860622][    C3] TCP: AO hash mismatch for [2001:db8:1::1].49818->[2001:db8:254::1].7012 [P.]L3index: 0
[  256.121315][    C1] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.