[ 1518.828541] secure_seq: tcp isn: 3559031016
[ 1518.828567] TCP: request_sock_TCP: Possible SYN flooding on port 0.0.0.0:56513. Sending cookies.
[ 1518.828766] secure_seq: tcpv6 isn: 3443577234
[ 1518.828782] TCP: request_sock_TCPv6: Possible SYN flooding on port [::]:46947. Sending cookies.