Comment 10 for bug 1600783

This might be caused by this code (from ~deja-dup-hackers/deja-dup/34 : /libdeja/Network.vala lines 40 to 51 in revision 1580):

  public async bool can_reach(string url)
  {
    var mon = NetworkMonitor.get_default();
    try {
      var socket = NetworkAddress.parse_uri(url, 0);
      return yield mon.can_reach_async(socket);
    }
    catch (Error e) {
      warning("%s", e.message);
      return false;
    }
  }

Please see how the message from GLib.NetworkAddress or GLib.NetworkMonitor is passed to the user.
So lets try to find this string in the translation of GLib in vala.