network: force dig to use the records corresponding transport

src/features/network/updater.rs

@@ -70,20 +70,21 @@ fn essid() -> Option<String> {
 }
 
 fn ip_address(address_type: &IpAddress) -> Option<String> {
-    let command = process::Command::new("dig", &[
+    let mut command = process::Command::new("dig", &[
         // decrease time and tries because commands are executed synchronously
         // TODO: make asychronous
         "+time=3",  // default: 5 seconds
         "+tries=1", // default: 3
         "@resolver1.opendns.com",
-        match address_type {
-            IpAddress::V4 => "A",
-            IpAddress::V6 => "AAAA",
-        },
         "myip.opendns.com",
         "+short",
     ]);
 
+    command.args(match address_type {
+        IpAddress::V4 => ["A", "-4"],
+        IpAddress::V6 => ["AAAA", "-6"],
+    });
+
     let output = command.output().wrap_error(
         FEATURE_NAME,
         format!("ip address {} could not be fetched", address_type),

src/wrapper/process.rs

@@ -26,6 +26,14 @@ impl Command {
         Self { command }
     }
 
+    pub(crate) fn args<I, S>(&mut self, args: I)
+    where
+        I: IntoIterator<Item = S>,
+        S: AsRef<OsStr>,
+    {
+        self.command.args(args);
+    }
+
     pub(crate) fn output(mut self) -> Result<String> {
         self.command
             .output()