Be a little bit more verbose on virtual links.

proto/ospf/iface.c

@@ -608,6 +608,8 @@ ospf_iface_info(struct ospf_iface *ifa)
     cli_msg(-1015, "Virtual link to %R:", ifa->vid);
     cli_msg(-1015, "\tTransit area: %R (%u)", ifa->voa->areaid,
 	    ifa->voa->areaid);
+    cli_msg(-1015, "\tInterface: \"%s\"",
+	    (ifa->iface ? ifa->iface->name : "(none)"));
   }
   else
   {