[  245.042772][    C1] net_ratelimit: 5 callbacks suppressed
[  245.042779][    C1] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.
[  246.056172][    C2] TCP: AO hash mismatch for [2001:db8:254::1].7011->[2001:db8:1::1].59362 [P.]L3index: 0
[  246.056700][    C2] TCP: AO hash mismatch for [2001:db8:1::1].59362->[2001:db8:254::1].7011 [P.]L3index: 0