--- gvpe/src/device.h	2003/04/02 03:25:17	1.3
+++ gvpe/src/device.h	2003/04/06 20:01:52	1.4
@@ -28,13 +28,19 @@
 struct net_packet {
   u32 len; // actually u16, but padding...
 
-  u8 &operator[] (u16 offset);
+  u8 &operator[] (u16 offset) const;
 
   void skip_hdr (u16 hdrsize)
     {
       memmove ((void *)&(*this)[0], (void *)&(*this)[hdrsize], len -= hdrsize);
     }
 
+  void set (const net_packet &pkt)
+    {
+      len = pkt.len;
+      memcpy (&((*this)[0]), &(pkt[0]), len);
+    }
+
   bool is_arp ()
     {
       return (*this)[12] == 0x08 && (*this)[13] == 0x06		// 0806 protocol
@@ -52,7 +58,7 @@
 };
 
 inline 
-u8 &net_packet::operator[] (u16 offset)
+u8 &net_packet::operator[] (u16 offset) const
 {
   return ((data_packet *)this)->data_[offset];
 }