Hello,

I would like to conduct some ethernet network testing using a NetBSD  
client & server configuration.  The unusual part about this is that I  
want my configuration to be a single NetBSD system functioning as  
both a client and a server, physically sending network traffic out on  
interface and back into another, using a cross-cable.

I initially attempted to set this up on a Linux system, but any  
configuration I could devise was still defeated by the routing code,  
which knew that the destination was ultimately "local" and would  
"receive" the traffic without ever physically sending it.  AFAICT,  
making it work the way I want would have required a convoluted  
iptables configuration or a kernel patch.  I'm hoping the NetBSD team  
has already provided a knob for doing this on NetBSD!

TIA,
--
-bp