- fw $action $mode f ${chain}_ACCEPT ACCEPT ^ { -o "$ifname" }
- fw $action $mode f ${chain}_ACCEPT ACCEPT ^ { -i "$ifname" }
- fw $action $mode f ${chain}_DROP DROP ^ { -o "$ifname" }
- fw $action $mode f ${chain}_DROP DROP ^ { -i "$ifname" }
- fw $action $mode f ${chain}_REJECT reject ^ { -o "$ifname" }
- fw $action $mode f ${chain}_REJECT reject ^ { -i "$ifname" }
-
- fw $action $mode n ${chain}_nat MASQUERADE ^ { -o "$ifname" }
- fw $action $mode f ${chain}_MSSFIX TCPMSS ^ { -o "$ifname" -p tcp --tcp-flags SYN,RST SYN --clamp-mss-to-pmtu }
-
- fw $action $mode f input ${chain} $ { -i "$ifname" }
- fw $action $mode f forward ${chain}_forward $ { -i "$ifname" }
- fw $action $mode n PREROUTING ${chain}_prerouting ^ { -i "$ifname" }
- fw $action $mode r PREROUTING ${chain}_notrack ^ { -i "$ifname" }
+ case "$mode/$subnet" in
+ # Zone supports v6 only or dual, need v6
+ 6/*:*|i/*:*)
+ inet="{ -s $subnet -d ::/0 }"
+ onet="{ -s ::/0 -d $subnet }"
+ mode=6
+ ;;
+
+ # Zone supports v4 only or dual, need v4
+ 4/*.*.*.*|i/*.*.*.*)
+ inet="{ -s $subnet -d 0.0.0.0/0 }"
+ onet="{ -s 0.0.0.0/0 -d $subnet }"
+ mode=4
+ ;;
+
+ # Need v6 while zone is v4
+ */*:*) fw_log info "zone $zone does not support IPv6 address family, skipping"; return ;;
+
+ # Need v4 while zone is v6
+ */*.*) fw_log info "zone $zone does not support IPv4 address family, skipping"; return ;;
+ esac
+
+ fw $action $mode f ${chain}_ACCEPT ACCEPT ^ $onet { -o "$ifname" }
+ fw $action $mode f ${chain}_ACCEPT ACCEPT ^ $inet { -i "$ifname" }
+ fw $action $mode f ${chain}_DROP DROP ^ $onet { -o "$ifname" }
+ fw $action $mode f ${chain}_DROP DROP ^ $inet { -i "$ifname" }
+ fw $action $mode f ${chain}_REJECT reject ^ $onet { -o "$ifname" }
+ fw $action $mode f ${chain}_REJECT reject ^ $inet { -i "$ifname" }
+
+ fw $action $mode n ${chain}_nat MASQUERADE ^ $onet { -o "$ifname" }
+ fw $action $mode f ${chain}_MSSFIX TCPMSS ^ $onet { -o "$ifname" -p tcp --tcp-flags SYN,RST SYN --clamp-mss-to-pmtu }
+
+ fw $action $mode f input ${chain} $ $inet { -i "$ifname" }
+ fw $action $mode f forward ${chain}_forward $ $inet { -i "$ifname" }
+ fw $action $mode n PREROUTING ${chain}_prerouting ^ $inet { -i "$ifname" }
+ fw $action $mode r PREROUTING ${chain}_notrack ^ $inet { -i "$ifname" }