Just to provide some closure to this, I just had this happen to me again when I unpluged my
DSL Modem. However, this time I tried su'ing to root and arp -d gateway.cet.com (the
Modem's IP.) As soon as I did, and try'd pinging it again, everything started working.

I don't really understand why disconecting the Modem, then re-connecting it later would
have this effect. But, it does!

Thanks again for all the help!

Gerry Simmons
simmons@darykon.cet.com

On Fri Apr 13 Andrew Brown wrote:
> 
> >> How do you flush the ARP tables???
> >
> >Presuming a Bourne-derived shell:
> >
> ># for i in `arp -a | awk '{ print $1 }'`; do arp -d ${i} ; done
> >
> >(Yes, arp really ought to have a flush. No, it doesn't seem to. Note
> >the hash above. Yes, you must be root to use arp -d.)