[  250.467545][    C3] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.
[  250.670225][    C2] TCP: AO hash mismatch for [2001:db8:1::1].57440->[2001:db8:254::1].7011 [P.]L3index: 0
[  250.670983][    C2] TCP: AO hash mismatch for [2001:db8:254::1].7011->[2001:db8:1::1].57440 [P.]L3index: 0