diff --git a/plugins/hypervisors/vmware/src/com/cloud/hypervisor/vmware/resource/VmwareResource.java b/plugins/hypervisors/vmware/src/com/cloud/hypervisor/vmware/resource/VmwareResource.java
index 238ba3ed864..abd5f3b0026 100644
--- a/plugins/hypervisors/vmware/src/com/cloud/hypervisor/vmware/resource/VmwareResource.java
+++ b/plugins/hypervisors/vmware/src/com/cloud/hypervisor/vmware/resource/VmwareResource.java
@@ -831,18 +831,19 @@ public class VmwareResource implements StoragePoolResource, ServerResource, Vmwa
         VmwareManager mgr = getServiceContext().getStockObject(VmwareManager.CONTEXT_STOCK_NAME);
 
         s_logger.info("findRouterEthDeviceIndex. mac: " + mac);
-
-        // TODO : this is a temporary very inefficient solution, will refactor it later
-        Pair<Boolean, String> result = SshHelper.sshExecute(routerIp, DefaultDomRSshPort, "root", mgr.getSystemVMKeyFile(), null, "ls /proc/sys/net/ipv4/conf");
+        ArrayList<String> skipInterfaces = new ArrayList<String>(Arrays.asList("all", "default", "lo"));
 
         // when we dynamically plug in a new NIC into virtual router, it may take time to show up in guest OS
         // we use a waiting loop here as a workaround to synchronize activities in systems
         long startTick = System.currentTimeMillis();
         while (System.currentTimeMillis() - startTick < 15000) {
+
+            // TODO : this is a temporary very inefficient solution, will refactor it later
+            Pair<Boolean, String> result = SshHelper.sshExecute(routerIp, DefaultDomRSshPort, "root", mgr.getSystemVMKeyFile(), null, "ls /proc/sys/net/ipv4/conf");
             if (result.first()) {
                 String[] tokens = result.second().split("\\s+");
                 for (String token : tokens) {
-                    if (!("all".equalsIgnoreCase(token) || "default".equalsIgnoreCase(token) || "lo".equalsIgnoreCase(token))) {
+                    if (!(skipInterfaces.contains(token))) {
                         String cmd = String.format("ip address show %s | grep link/ether | sed -e 's/^[ \t]*//' | cut -d' ' -f2", token);
 
                         if (s_logger.isDebugEnabled())
@@ -853,8 +854,11 @@ public class VmwareResource implements StoragePoolResource, ServerResource, Vmwa
                         if (s_logger.isDebugEnabled())
                             s_logger.debug("result: " + result2.first() + ", output: " + result2.second());
 
-                        if (result2.first() && result2.second().trim().equalsIgnoreCase(mac.trim()))
+                        if (result2.first() && result2.second().trim().equalsIgnoreCase(mac.trim())) {
                             return Integer.parseInt(token.substring(3));
+                        } else {
+                            skipInterfaces.add(token);
+                        }
                     }
                 }
             }