--- gvpe/src/device.h	2003/10/16 14:12:00	1.12
+++ gvpe/src/device.h	2005/03/03 07:24:57	1.16
@@ -1,6 +1,6 @@
 /*
     device.h -- generic header for device.c
-    Copyright (C) 2003 Marc Lehmann <pcg@goof.com>
+    Copyright (C) 2003-2004 Marc Lehmann <pcg@goof.com>
  
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -31,6 +31,7 @@
   u32 len; // actually u16, but padding...
 
   u8 &operator[] (u16 offset) const;
+  u8 *at (u16 offset) const;
 
   void unshift_hdr (u16 hdrsize)
     {
@@ -88,6 +89,12 @@
   return ((data_packet *)this)->data_[offset];
 }
 
+inline 
+u8 *net_packet::at (u16 offset) const
+{
+  return &((*this)[offset]);
+}
+
 struct tap_packet : net_packet {
   mac dst;
   mac src;