IPV6_FW_TCPF_FIN
if (chain->fw_tcpf & IPV6_FW_TCPF_FIN) PRINTFLG("fin");
if (chain->fw_tcpnf & IPV6_FW_TCPF_FIN) PRINTFLG("!fin");
{ "fin", IPV6_FW_TCPF_FIN },