title: Windows packet sniffer that can capture loopback traffic?
body: <p>(This is a followup to my <a href="https://stackoverflow.com/questions/42468/how-do-i-measure-bytes-inout-of-an-ip-port-used-for-net-remoting">previous question</a> about measuring .NET remoting traffic.)</p>
  
  <p>When I am testing our Windows service / service controller GUI combination, it is often most convenient to run both pieces on my development box. With this setup, the remoting traffic between the two is via loopback, not through the Ethernet card.</p>
  
  <p>Are there any software packet sniffers that can capture loopback traffic on a WinXP machine? <a href="http://www.wireshark.org/" rel="nofollow noreferrer">Wireshark</a> is a great package, but it can only capture external traffic on a Windows machine, not loopback.</p>