[  220.963318][    C3] TCP: AO hash mismatch for [2001:db8:1::1].51500->[2001:db8:254::1].7011 [FP.]L3index: 0
[  220.963706][    C1] TCP: AO hash mismatch for [2001:db8:254::1].7011->[2001:db8:1::1].51500 [FP.]L3index: 0
[  221.987228][    C3] TCP: AO hash mismatch for [2001:db8:1::1].40468->[2001:db8:254::1].7012 [FP.]L3index: 0
[  221.987524][    C1] TCP: AO hash mismatch for [2001:db8:254::1].7012->[2001:db8:1::1].40468 [FP.]L3index: 0
[  223.005084][    C2] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.