diff -uNr -X linux-2.6.15/Documentation/dontdiff linux-2.6.15/net/core/dev.c linux-2.6.15.4/net/core/dev.c
--- linux-2.6.15/net/core/dev.c	2006-01-03 04:21:10.000000000 +0100
+++ linux-2.6.15.4/net/core/dev.c	2006-02-21 20:14:27.000000000 +0100
@@ -104,6 +104,7 @@
 #include <linux/highmem.h>
 #include <linux/init.h>
 #include <linux/kmod.h>
+#include <linux/kobject_uevent.h>
 #include <linux/module.h>
 #include <linux/kallsyms.h>
 #include <linux/netpoll.h>
@@ -742,6 +743,34 @@
 }
 
 /**
+ *	netdev_uevent - notify userspace of netdev events
+ *	@dev: device
+ *	@event: event for device
+ *
+ *	Called to notify userspace of (de-)registering and status events
+ *	of netdevices
+ */
+static inline void
+netdev_uevent(struct net_device *dev, int event)
+{
+	kobject_action_t action = 0;
+
+	switch (event) {
+	case NETDEV_CHANGE:
+		action = netif_carrier_ok (dev) ? KOBJ_ONLINE : KOBJ_OFFLINE;
+		break;
+	case NETDEV_REGISTER:
+		action = KOBJ_ADD;
+		break;
+	case NETDEV_UNREGISTER:
+		action = KOBJ_REMOVE;
+		break;
+	}
+	if (action)
+		kobject_uevent (&dev->class_dev.kobj, action, NULL);
+}
+
+/**
  *	netdev_features_change - device changes fatures
  *	@dev: device to cause notification
  *
@@ -765,6 +794,7 @@
 {
 	if (dev->flags & IFF_UP) {
 		notifier_call_chain(&netdev_chain, NETDEV_CHANGE, dev);
+		netdev_uevent(dev, NETDEV_CHANGE);
 		rtmsg_ifinfo(RTM_NEWLINK, dev, 0);
 	}
 }
@@ -2937,6 +2967,7 @@
 			if (err)
 				printk(KERN_ERR "%s: failed sysfs registration (%d)\n",
 				       dev->name, err);
+			netdev_uevent (dev, NETDEV_REGISTER);
 			dev->reg_state = NETREG_REGISTERED;
 			break;
 
@@ -3108,6 +3139,7 @@
 	   this device. They should clean all the things.
 	*/
 	notifier_call_chain(&netdev_chain, NETDEV_UNREGISTER, dev);
+	netdev_uevent (dev, NETDEV_UNREGISTER);
 	
 	/*
 	 *	Flush the multicast chain