[  229.553728][    C0] net_ratelimit: 3 callbacks suppressed
[  229.553735][    C0] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.
[  230.704337][    C1] TCP: AO hash mismatch for [2001:db8:254::1].7011->[2001:db8:1::1].32844 [FP.]L3index: 0
[  230.705752][    C2] TCP: AO hash mismatch for [2001:db8:1::1].32844->[2001:db8:254::1].7011 [FP.]L3index: 0