[ 254.261935][ C0] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].45578 [P.]L3index: 0 [ 254.261951][ C2] TCP: AO hash mismatch for [2001:db8:254::1].7014->[2001:db8:1::1].45578 [.]L3index: 0 [ 257.503739][ C0] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies.