[ 253.852225][ C1] net_ratelimit: 4 callbacks suppressed [ 253.852232][ C1] TCP: AO hash mismatch for 10.0.254.1.7011->10.0.1.1.40198 [P.] L3index: 0 [ 253.852480][ C2] TCP: AO hash mismatch for 10.0.1.1.40198->10.0.254.1.7011 [P.] L3index: 0 [ 254.433337][ C0] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies. [ 254.876643][ C3] TCP: AO hash mismatch for 10.0.1.1.59856->10.0.254.1.7012 [P.] L3index: 0 [ 254.877254][ C3] TCP: AO hash mismatch for 10.0.254.1.7012->10.0.1.1.59856 [P.] L3index: 0