retry with family=0 when family=6,4 throws ENOTFOUND

lib/connection/connect.js

@@ -36,8 +36,20 @@ function connect(options, callback) {
     if (err) {
       makeConnection(4, options, (err, ipv4Socket) => {
         if (err) {
-          callback(err, ipv4Socket); // in the error case, `ipv4Socket` is the originating error event name
-          return;
+          makeConnection(0, options, (err, ipDefaultSocket) => {
+            if (err) {
+              callback(err, ipDefaultSocket) 
+              return
+            }
+
+            performInitialHandshake(
+              new Connection(ipDefaultSocket, options),
+              options,
+              callback
+            )
+          })
+
+          return
         }
 
         performInitialHandshake(new Connection(ipv4Socket, options), options, callback);