diff -uBbr vpnclient.orig/interceptor.c vpnclient/interceptor.c
--- vpnclient.orig/interceptor.c	2009-10-07 20:22:56.000000000 +0200
+++ vpnclient/interceptor.c	2009-10-07 20:28:48.000000000 +0200
@@ -120,6 +120,14 @@
     .notifier_call = handle_netdev_event,
 };
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
+static const struct net_device_ops vpn_netdev_ops = {
+ .ndo_start_xmit = interceptor_tx,
+ .ndo_get_stats = interceptor_stats,
+ .ndo_do_ioctl = interceptor_ioctl,
+};
+#endif
+
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
 static int
 #else
@@ -128,10 +136,13 @@
 interceptor_init(struct net_device *dev)
 {
     ether_setup(dev);
-
+    #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
+    dev->netdev_ops = &vpn_netdev_ops;
+    #else
     dev->hard_start_xmit = interceptor_tx;
     dev->get_stats = interceptor_stats;
     dev->do_ioctl = interceptor_ioctl;
+    #endif
 
     dev->mtu = ETH_DATA_LEN-MTU_REDUCTION;
     kernel_memcpy(dev->dev_addr, interceptor_eth_addr,ETH_ALEN);
@@ -268,8 +279,13 @@
     Bindings[i].original_mtu = dev->mtu;
 
     /*replace the original send function with our send function */
+    #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
+    Bindings[i].InjectSend = dev->netdev_ops->ndo_start_xmit;
+    dev->netdev_ops->ndo_start_xmit = replacement_dev_xmit;
+    #else
     Bindings[i].InjectSend = dev->hard_start_xmit;
     dev->hard_start_xmit = replacement_dev_xmit;
+    #endif
 
     /*copy in the ip packet handler function and packet type struct */
     Bindings[i].InjectReceive = original_ip_handler.orig_handler_func;
@@ -291,7 +307,11 @@
     if (b)
     {   
         rc = 0;
+        #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
+        dev->netdev_ops->ndo_start_xmit = b->InjectSend;
+        #else
         dev->hard_start_xmit = b->InjectSend;
+        #endif
         kernel_memset(b, 0, sizeof(BINDING));
     }
     else