[ 227.119550][ C1] TCP: AO hash mismatch for [2001:db8:254::1].7011->[2001:db8:1::1].55496 [FP.]L3index: 0 [ 227.120049][ C3] TCP: AO hash mismatch for [2001:db8:1::1].55496->[2001:db8:254::1].7011 [FP.]L3index: 0 [ 228.143506][ C1] TCP: AO hash mismatch for [2001:db8:1::1].54686->[2001:db8:254::1].7012 [FP.]L3index: 0 [ 228.143736][ C3] TCP: AO hash mismatch for [2001:db8:254::1].7012->[2001:db8:1::1].54686 [FP.]L3index: 0 [ 228.560992][ C3] TCP: request_sock_TCP: Possible SYN flooding on port 10.0.254.1:7010. Sending cookies.