want to rarp, but need help!

[Ed Allen]

Forwarded message:
> 
> 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
> 
> 
I found this on freshmeat:

   Linkname: [fmII] - Project details for Arping
        URL: http://freshmeat.net/projects/arping/

    Arping is an ARP level ping utility. It's good for finding out if
    an IP is taken before you have routing to that subnet. It can also
    ping MAC addresses directly.