+dhcp_srv_add() {
+ local cfg="$1"
+
+ config_get srv "$cfg" srv
+ [ -n "$srv" ] || return 0
+
+ config_get target "$cfg" target
+ [ -n "$target" ] || return 0
+
+ config_get port "$cfg" port
+ [ -n "$port" ] || return 0
+
+ config_get class "$cfg" class
+ config_get weight "$cfg" weight
+
+ local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
+
+ append args "-W $service"
+}
+
+dhcp_mx_add() {
+ local cfg="$1"
+
+ [ -n "$domain" ] || return 0
+
+ config_get relay "$cfg" relay
+ [ -n "$relay" ] || return 0
+
+ config_get pref "$cfg" pref 0
+
+ local service="$domain,$relay,$pref"
+
+ append args "--mx-host=$service"
+}
+
+dhcp_cname_add() {
+ local cfg="$1"
+ local cname target
+
+ config_get cname "$cfg" cname
+ [ -n "$cname" ] || return 0
+
+ config_get target "$cfg" target
+ [ -n "$target" ] || return 0
+
+ append args "--cname=${cname},${target}"
+}
+