IPV6_FW_F_IIFNAME
rule.fw_flg |= IPV6_FW_F_IIFNAME;
(IPV6_FW_F_IIFNAME | IPV6_FW_F_OIFNAME);
&chain->fw_in_if, chain->fw_flg & IPV6_FW_F_IIFNAME);
chain->fw_flg & IPV6_FW_F_IIFNAME);
&f->fw_in_if, f->fw_flg & IPV6_FW_F_IIFNAME)))
if (((frwl->fw_flg & IPV6_FW_F_IIFNAME)