made DDNS care less when checking the gateway fails

lib/ddns/index.js

@@ -124,8 +124,17 @@ module.exports.create = function (deps, conf) {
     // Since we can't detect the OS level events when a user plugs in an ethernet cable to recheck
     // what network environment we are in we check our local network address and the gateway to
     // determine if we need to run the loopback check and router configuration again.
-    var gw = await network.getGatewayIpAsync();
     var addr = await network.getPrivateIpAsync();
+    // Until the author of the `network` package publishes the pull request we gave him
+    // checking the gateway on our units fails because we have the busybox versions of
+    // the linux commands. Gateway is realistically less important than address, so if
+    // we fail in getting it go ahead and use the null value.
+    var gw;
+    try {
+      gw = await network.getGatewayIpAsync();
+    } catch (err) {
+      gw = null;
+    }
     if (localAddr === addr && gateway === gw) {
       return;
     }