[  246.970026][    C3] net_ratelimit: 3 callbacks suppressed
[  246.970032][    C3] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.
[  247.087075][    C3] TCP: AO hash mismatch for [2001:db8:1::1].38592->[2001:db8:254::1].7011 [P.]L3index: 0
[  247.087586][    C3] TCP: AO hash mismatch for [2001:db8:254::1].7011->[2001:db8:1::1].38592 [P.]L3index: 0
[  248.110807][    C2] TCP: AO hash mismatch for [2001:db8:1::1].47494->[2001:db8:254::1].7012 [P.]L3index: 0
[  248.112094][    C1] TCP: AO hash mismatch for [2001:db8:254::1].7012->[2001:db8:1::1].47494 [P.]L3index: 0