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Date: Tue, 03 Jul 2001 20:18:11 +0200
From: Juan Fco Rodriguez Hervella <jrh@it.uc3m.es>
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To: Lista <freebsd-net@freebsd.org>
Subject: How to send packets to another interface on the same machine
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Dear all:

I have the following problem: I would like to send an IPv6 packet using
a given 
interface, to the address that corresponds to another interface of the
same machine. 

This, that seems a bit akward, it would be interesting for obtaining
accurate 
packet latency results to test other systems that could be placed
between the 
two interfaces (routers, etc.). Since the sending and the receiving
process share 
the same physical clock, microsecond precision could be obtained in the
measures.

The problem is that FreeBSD recognises that the destination address is
in the same 
machine, and routes directly through the loopback interface, without
sending actually
the packets through the wire.

Anyone knows a trick to do this?

-- 
*********************************
Juan F. Rodriguez Hervella
Universidad Carlos III de Madrid
********************************

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