[  243.170681][    C3] net_ratelimit: 30 callbacks suppressed
[  243.170687][    C3] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.
[  243.436763][    C1] TCP: AO hash mismatch for [2001:db8:254::1].7012->[2001:db8:1::1].42726 [FP.]L3index: 0
[  243.436995][    C3] TCP: AO hash mismatch for [2001:db8:1::1].42726->[2001:db8:254::1].7012 [FP.]L3index: 0