diff -ur vpnclient.old/frag.c vpnclient.new/frag.c
--- vpnclient.old/frag.c	2007-08-22 15:30:31.000000000 -0400
+++ vpnclient/frag.c	2007-11-09 09:19:48.000000000 -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 -ur vpnclient.old/interceptor.c vpnclient.new/interceptor.c
--- vpnclient.old/interceptor.c	2007-08-22 15:30:31.000000000 -0400
+++ vpnclient/interceptor.c	2007-11-09 10:03:01.000000000 -0500
@@ -630,19 +630,31 @@
 
     reset_inject_status(&pBinding->recv_stat);
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
+#ifdef NET_SKBUFF_DATA_USES_OFFSET
+    if (skb->mac_header >= (skb->data-skb->head))
+#else
     if (skb->mac_header)
+#endif
 #else
     if (skb->mac.raw)
 #endif
     {
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
+#ifdef NET_SKBUFF_DATA_USES_OFFSET
+        hard_header_len = skb->mac_header - (skb->data - skb->head);
+#else
         hard_header_len = skb->data - skb->mac_header;
+#endif
 #else
         hard_header_len = skb->data - skb->mac.raw;
 #endif
         if ((hard_header_len < 0) || (hard_header_len > skb_headroom(skb)))
         {
-            printk(KERN_DEBUG "bad hh len %d\n", hard_header_len);
+            printk(KERN_DEBUG "bad hh len %d, mac: %d, data: %p, head: %p\n",
+                hard_header_len,
+                skb->mac_header,
+                skb->data,
+                skb->head);
             hard_header_len = 0;
         }
     }
@@ -657,7 +669,11 @@
     {
     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
@@ -775,7 +791,11 @@
 #endif //LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
     reset_inject_status(&pBinding->send_stat);
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
+#ifdef NET_SKBUFF_DATA_USES_OFFSET
+    hard_header_len = skb->network_header - (skb->data - skb->head);
+#else
     hard_header_len = skb->network_header - skb->data;
+#endif
 #else
     hard_header_len = skb->nh.raw - skb->data;
 #endif
diff -ur vpnclient.old/linuxcniapi.c vpnclient.new/linuxcniapi.c
--- vpnclient.old/linuxcniapi.c	2007-08-22 15:30:31.000000000 -0400
+++ vpnclient/linuxcniapi.c	2007-11-09 09:17:50.000000000 -0500
@@ -338,8 +338,13 @@
     skb->ip_summed = CHECKSUM_UNNECESSARY;
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
+#ifdef NET_SKBUFF_DATA_USES_OFFSET
+    skb->network_header = skb->data - skb->head;
+    skb->mac_header = 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)
+#ifdef NET_SKBUFF_DATA_USES_OFFSET
+    skb->network_header = skb->data - skb->head;
+    skb->mac_header = pMac - 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)
+#ifdef NET_SKBUFF_DATA_USES_OFFSET
+    skb->transport_header =
+      (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
diff -ur vpnclient.old/linuxkernelapi.c vpnclient.new/linuxkernelapi.c
--- vpnclient.old/linuxkernelapi.c	2007-08-22 15:30:31.000000000 -0400
+++ vpnclient/linuxkernelapi.c	2007-11-09 09:23:21.000000000 -0500
@@ -9,7 +9,7 @@
     void*rc = kmalloc(size, GFP_ATOMIC);
     if(NULL == rc)
     {
-        printk("<1> os_malloc size %d failed\n",size);
+        printk("<1> os_malloc size %ld failed\n",size);
     }
 
     return rc;