On Mon, 24 Jun 2002, Ben Greear wrote:

It would not defeat the purpose of detecting at least one bad network
link of the two.

Unless i misunderstood:
He seems to be trying to do a loopback test from one of his interfaces to
the network and back on another of his interfaces.

I wonder if a ping -I eth1 255.255.255.255 would accomplish the
goal as well?

This would probably cause a broadcast storm if you are doing a loopback
test ;->

Actually now that i think about it, you could probably modify ping
to do setsockopt(fd,....,SO_DONTROUTE,...) and send it out on a specific
interface. Dont know if it would work.

I would actually like to be able to force a machine to not do local
routing as well, and force packets out over an interface even if
the destination is a local IP,  using source-based-routing,
or something similar.  There is no way to do this currently?

Try that SO_DONTROUTE and see if solves your problem; you probably have to
bind the socket to a specific device as well;
For all that trouble, i would suggest you may just as well write a sock
packet based  app.

cheers,
jamal