[ 254.783912][ C3] net_ratelimit: 3 callbacks suppressed [ 254.784241][ C3] TCP: AO hash mismatch for 10.0.1.1.45170->10.0.254.1.7011 [P.] L3index: 0 [ 254.784314][ C1] TCP: AO hash mismatch for 10.0.254.1.7011->10.0.1.1.45170 [P.] L3index: 0 [ 255.511187][ C2] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies. [ 255.807927][ C1] TCP: AO hash mismatch for 10.0.254.1.7012->10.0.1.1.54914 [P.] L3index: 0 [ 255.808024][ C3] TCP: AO hash mismatch for 10.0.1.1.54914->10.0.254.1.7012 [P.] L3index: 0