PRINTFLG
if (chain->fw_tcpf & IPV6_FW_TCPF_FIN) PRINTFLG("fin");
if (chain->fw_tcpnf & IPV6_FW_TCPF_FIN) PRINTFLG("!fin");
if (chain->fw_tcpf & IPV6_FW_TCPF_SYN) PRINTFLG("syn");
if (chain->fw_tcpnf & IPV6_FW_TCPF_SYN) PRINTFLG("!syn");
if (chain->fw_tcpf & IPV6_FW_TCPF_RST) PRINTFLG("rst");
if (chain->fw_tcpnf & IPV6_FW_TCPF_RST) PRINTFLG("!rst");
if (chain->fw_tcpf & IPV6_FW_TCPF_PSH) PRINTFLG("psh");
if (chain->fw_tcpnf & IPV6_FW_TCPF_PSH) PRINTFLG("!psh");
if (chain->fw_tcpf & IPV6_FW_TCPF_ACK) PRINTFLG("ack");
if (chain->fw_tcpnf & IPV6_FW_TCPF_ACK) PRINTFLG("!ack");
if (chain->fw_tcpf & IPV6_FW_TCPF_URG) PRINTFLG("urg");
if (chain->fw_tcpnf & IPV6_FW_TCPF_URG) PRINTFLG("!urg");