Index: uspace/drv/infrastructure/rootvirt/devices.def
===================================================================
--- uspace/drv/infrastructure/rootvirt/devices.def	(revision 5203e2569a38ea677d1b3f202650bb36f9609583)
+++ uspace/drv/infrastructure/rootvirt/devices.def	(revision b0f00a9ed1b00bda8a286a4c4bbe625a7f410bc6)
@@ -4,5 +4,13 @@
  * Unless the list is empty, the last item shall be followed by a comma.
  */
+
+/* Loopback network interface */
+{
+    .name = "lo",
+    .match_id = "virtual&loopback"
+},
+
 #ifdef CONFIG_TEST_DRIVERS
+
 {
 	.name = "test1",
@@ -25,6 +33,9 @@
 	.match_id = "virtual&test3"
 },
+
 #endif
+
 #ifdef CONFIG_RUN_VIRTUAL_USB_HC
+
 /* Virtual USB host controller. */
 {
@@ -32,3 +43,4 @@
 	.match_id = "usb&hc=vhc"
 },
+
 #endif