Or better yet use arp -a and pipe it thru grep for the MAC address being
looked for.
If you have multiple MACs a small script that takes an address would
probably the best solution.

> -----Original Message-----
> From: Uncle Jim [mailto:jim@jimani.com]
> Sent: Wednesday, May 16, 2001 2:43 AM
> To: mike neuliep
> Cc: kclug@kclug.org
> Subject: Re: want to rarp, but need help!
> 
> 
> Mike,
> 
> Try "arp -a" and look through the list.  The data has a short 
> life so if
> you don't find it you may need to do something ugly like 
> pinging a broadcast
> address.
> 
> > Got a question for the networking gurus out there.  Using 
> only linux 2.2.x
> > and the utils that come with it, if I have a MAC address 
> and nothing else,
> > how can I find out what IP address (if any) that MAC is 
> associated with?
> > Currently I can do this by looking in our router, but 
> that's slow and cumbersome
> > I don't want to ping everything to build up the arp table either.
> > I need a utility that will do request the IP from the MAC 
> address.  Any
> > takers?
> --
> Jim
> 
> 
> majordomo@kclug.org
>