View source for HOWTO extract the IP src/dst address from a packet

{{TOC}}

A common question we hear is, "what is the appropriate way to extract the ip 
src/dst address from a packet"?  Here is the official answer ...

== HOWTO extract the IP src/dst address from a packet ==

What is the appropriate way to extract the ip src/dst address from a packet?

  // copy packet to avoid modifying the original packet
  Ptr<Packet> copy = p->Copy ();
  Ipv4Header iph;
  copy->RemoveHeader (iph);
  // copy will disappear when you are done with it.

[[User:Craigdo|Craigdo]] 19:55, 5 August 2008 (EDT)