[  231.406442][    C0] net_ratelimit: 1 callbacks suppressed
[  231.406451][    C0] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.
[  231.777872][    C2] TCP: AO hash mismatch for [2001:db8:254::1].7011->[2001:db8:1::1].57190 [FP.]L3index: 0
[  231.778424][    C2] TCP: AO hash mismatch for [2001:db8:1::1].57190->[2001:db8:254::1].7011 [FP.]L3index: 0