diff -u -x '*.ko*' -x '*.o*' vpnclient/frag.c vpnclient_modified/frag.c
--- vpnclient/frag.c	2007-08-22 15:30:31.000000000 -0400
+++ vpnclient_modified/frag.c	2008-01-11 01:41:19.000000000 -0500
@@ -22,7 +22,11 @@
 #include "frag.h"
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
+#ifdef NET_SKBUFF_DATA_USES_OFFSET    
+#define SKB_IPHDR(skb) ((struct iphdr*)(skb->head + skb->network_header))
+#else
 #define SKB_IPHDR(skb) ((struct iphdr*)skb->network_header)
+#endif
 #else
 #define SKB_IPHDR(skb) skb->nh.iph
 #endif
diff -u -x '*.ko*' -x '*.o*' vpnclient/interceptor.c vpnclient_modified/interceptor.c
--- vpnclient/interceptor.c	2007-08-22 15:30:31.000000000 -0400
+++ vpnclient_modified/interceptor.c	2008-01-11 02:04:01.000000000 -0500
@@ -636,7 +636,11 @@
 #endif
     {
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
+    #ifdef NET_SKBUFF_DATA_USES_OFFSET    
+        hard_header_len = skb->data - (skb->head + skb->mac_header);
+    #else
         hard_header_len = skb->data - skb->mac_header;
+    #endif
 #else
         hard_header_len = skb->data - skb->mac.raw;
 #endif
@@ -657,7 +661,11 @@
     {
     case ETH_HLEN:
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
+    #ifdef NET_SKBUFF_DATA_USES_OFFSET    
+        CniNewFragment(ETH_HLEN, skb->head + skb->mac_header, &MacHdr, CNI_USE_BUFFER);
+    #else
         CniNewFragment(ETH_HLEN, skb->mac_header, &MacHdr, CNI_USE_BUFFER);
+    #endif
 #else
         CniNewFragment(ETH_HLEN, skb->mac.raw, &MacHdr, CNI_USE_BUFFER);
 #endif
@@ -667,7 +675,7 @@
         MacHdr = build_ppp_fake_mac_frag(&ppp_dummy_buf);
         break;
     default:
-        printk(KERN_DEBUG "unknown mac header length (%d)\n", hard_header_len);
+        printk(KERN_DEBUG "unknown mac header length (%d) CniNewFragment\n", hard_header_len);
         dev_kfree_skb(skb);
         skb = NULL;
         goto exit_gracefully;
@@ -775,7 +783,12 @@
 #endif //LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
     reset_inject_status(&pBinding->send_stat);
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
-    hard_header_len = skb->network_header - skb->data;
+    #ifdef NET_SKBUFF_DATA_USES_OFFSET    
+        hard_header_len = 
+          (skb->head + skb->network_header) - skb->data;
+    #else
+        hard_header_len = skb->network_header - skb->data;
+    #endif
 #else
     hard_header_len = skb->nh.raw - skb->data;
 #endif
diff -u -x '*.ko*' -x '*.o*' vpnclient/linuxcniapi.c vpnclient_modified/linuxcniapi.c
--- vpnclient/linuxcniapi.c	2007-08-22 15:30:31.000000000 -0400
+++ vpnclient_modified/linuxcniapi.c	2008-01-11 01:41:19.000000000 -0500
@@ -338,8 +338,13 @@
     skb->ip_summed = CHECKSUM_UNNECESSARY;
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
-    skb->network_header = (sk_buff_data_t) skb->data;
-    skb->mac_header = (sk_buff_data_t)pMac;
+    #ifdef NET_SKBUFF_DATA_USES_OFFSET
+        skb->network_header = (sk_buff_data_t) (skb->data - skb->head);
+        skb->mac_header = (sk_buff_data_t) (pMac - skb->head);        
+    #else
+        skb->network_header = (sk_buff_data_t) skb->data;
+        skb->mac_header = (sk_buff_data_t)pMac;
+    #endif
 #else
     skb->nh.iph = (struct iphdr *) skb->data;
     skb->mac.raw = pMac;
@@ -478,8 +483,13 @@
     skb->dev = pBinding->pDevice;
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
-    skb->mac_header = (sk_buff_data_t)pMac;
-    skb->network_header = (sk_buff_data_t)pIP;
+    #ifdef NET_SKBUFF_DATA_USES_OFFSET
+        skb->mac_header = (sk_buff_data_t)(pMac - skb->head);
+        skb->network_header = (sk_buff_data_t)(pIP - skb->head);    
+    #else
+        skb->mac_header = (sk_buff_data_t)pMac;
+        skb->network_header = (sk_buff_data_t)pIP;
+    #endif
 #else
     skb->mac.raw = pMac;
     skb->nh.raw = pIP;
@@ -487,8 +497,13 @@
 
     /*ip header length is in 32bit words */
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
-    skb->transport_header = (sk_buff_data_t)
-      (pIP + (((struct iphdr*)(skb->network_header))->ihl * 4));
+    #ifdef NET_SKBUFF_DATA_USES_OFFSET
+        skb->transport_header = (sk_buff_data_t)
+          ((pIP + (((struct iphdr*)(skb->head + skb->network_header))->ihl * 4)) - skb->head);
+    #else
+        skb->transport_header = (sk_buff_data_t)
+          (pIP + (((struct iphdr*)(skb->network_header))->ihl * 4));
+    #endif
 #else
     skb->h.raw = pIP + (skb->nh.iph->ihl * 4);
 #endif