[ 248.108927][ C1] TCP: AO hash mismatch for [2001:db8:1::1].56052->[2001:db8:254::1].7011 [P.]L3index: 0 [ 248.108941][ C2] TCP: AO hash mismatch for [2001:db8:254::1].7011->[2001:db8:1::1].56052 [P.]L3index: 0 [ 248.595571][ C1] TCP: request_sock_TCPv6: Possible SYN flooding on port [2001:db8:254::1]:7010. Sending cookies. [ 249.132934][ C1] TCP: AO hash mismatch for [2001:db8:1::1].42442->[2001:db8:254::1].7012 [P.]L3index: 0 [ 249.133022][ C2] TCP: AO hash mismatch for [2001:db8:254::1].7012->[2001:db8:1::1].42442 [P.]L3index: 0