diff --git a/nanoFramework.System.Net/NetworkInformation/NetworkInterface.cs b/nanoFramework.System.Net/NetworkInformation/NetworkInterface.cs
index 3c5e72f..2efceaa 100644
--- a/nanoFramework.System.Net/NetworkInformation/NetworkInterface.cs
+++ b/nanoFramework.System.Net/NetworkInformation/NetworkInterface.cs
@@ -209,8 +209,11 @@ public void EnableDhcp()
         {
             try
             {
-                _startupAddressMode = AddressMode.DHCP;
-                UpdateConfiguration((int)UpdateOperation.Dhcp);
+                if (_startupAddressMode != AddressMode.DHCP)
+                {
+                    _startupAddressMode = AddressMode.DHCP;
+                    UpdateConfiguration((int)UpdateOperation.Dhcp);
+                }
             }
             finally
             {