[  238.930512][    C3] TCP: AO hash mismatch for [2001:db8:1::1].59754->[2001:db8:254::1].7011 [FP.]L3index: 0
[  238.931071][    C3] TCP: AO hash mismatch for [2001:db8:254::1].7011->[2001:db8:1::1].59754 [FP.]L3index: 0
[  239.954287][    C1] TCP: AO hash mismatch for [2001:db8:254::1].7012->[2001:db8:1::1].58636 [FP.]L3index: 0
[  239.954314][    C2] TCP: AO hash mismatch for [2001:db8:1::1].58636->[2001:db8:254::1].7012 [FP.]L3index: 0
[  240.553331][    C0] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.