On Wed, Dec 11, 2002 at 06:31:45PM -0600, Richard Rauch wrote:
> > > I occasionally see my DSL lights flicker briefly when there should be no
> > > network traffic.  Here is tcpdump output from one such episode:
> > >
> > > 06:24:58.854518 arp who-has adsl-66-136-7-253.dsl.hstntx.swbell.net tell adsl-66-136-7-253.dsl.hstntx.swbell.net
> > >
> > > This is puzzling.  66.136.7.253 is supposed to be an IP number assigned to
> > > me (though I don't use it yet).  Is who-has for route discovery?  Why
> >
> > It's to get the mac address associated to the IP. It can be seen as
> > some kind of route discovery.
> 
> That's kind of what I figured.  But then, why tell ...253 to tell itself?

I didn't pay attention to that.
This happens when an interface is configured (see Urban's anserw).
Is adsl-66-136-7-253 one of your addresses ?

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
     NetBSD: 23 ans d'experience feront toujours la difference
--