[  261.271551][    C2] TCP: AO hash mismatch for [2001:db8:1::1].47140->[2001:db8:254::1].7013 [P.]L3index: 0
[  261.273163][    C3] TCP: AO hash mismatch for [2001:db8:1::1].47140->[2001:db8:254::1].7013 [.]L3index: 0
[  262.295954][    C1] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].49506 [.]L3index: 0
[  262.296568][    C3] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].49506 [P.]L3index: 0
[  264.972888][    C0] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.