[  250.157592][    C3] TCP: AO hash mismatch for [2001:db8:1::1].57310->[2001:db8:254::1].7013 [P.]L3index: 0
[  250.159047][    C3] TCP: AO hash mismatch for [2001:db8:1::1].57310->[2001:db8:254::1].7013 [.]L3index: 0
[  251.180563][    C2] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].40928 [P.]L3index: 0
[  251.180845][    C1] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].40928 [.]L3index: 0
[  253.643134][    C2] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.