From: Eric Paul (epaul@syncline.com)
Date: Thu Sep 12 2002 - 12:22:10 EDT
Many thanks to all who replied. Craig Russell and Ed Rolison both informed
me of the evil nscd daemon that in addition to caching nameserver lookups
also caches a copy of your arp table. Evil! Evil!!
I ended up restarting nscd on the boxes, and then bringing the interface up
and down to clear it all out. Thanks to Tim Chipman for suggesting that
with command stacking I wouldn't need to pull out my LOM cables.
Commands used:
# /etc/init.d/nscd stop
# /etc/init.d/nscd start
# ifconifg hme0 down; ifconfig hme0 up
Thanks again! Original question below:
Eric
At 10:54 AM 9/11/2002, you wrote:
>Hi there.
>
>I was attempting to install a new piece of firewall hardware last
>nite. To make life easier on the network topology end, I set it up to use
>the same inside IP addresses as the previous equipment. When I switched
>it on, as expected, I had some issues with the machines on the network not
>wanting to route packets through it. I was able to get all our linux
>servers up and running by clearing the arp cache using "arp -d 10.50.7.1"
>where 10.50.7.1 is the address of the firewall. I tried to do a similar
>thing on our Sun boxes, but no luck, they still don't want to see the
>outside world. What am I forgetting? I dropped the old firewall back in
>the loop for now, and the Suns are all seeing the network again. I know
>that a reboot would probably fix this, but I *REALLY* want to avoid this
>option. Our production machines take forever to come back up from a cold
>start, and given that my maintenance window is way past my bed time, I'm
>looking for another solution.
>
>TIA! I will summarize!
>
>Eric
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