strange network behaviour

Charles Swiger cswiger at
Mon Jun 6 21:59:37 GMT 2005

On Jun 6, 2005, at 1:46 PM, ben at wrote:
> on Friday i set up 4 old celeron boxes as DNS servers for a  
> client.  after
> about 5 minutes, their ability to reach the network vanishes...  
> they can't
> ping their router, and inbound network traffic vanishes.  rebooting  
> fixes
> the problem... for another ~ 5 min.
> the only things running are chrooted bind, postfix, and webmin.   
> ipfw is
> on, with firewall_type="open".  i've also tried it with ipfw disabled.

Someone who mentioned ARP may be right, judging by the timeout, but  
perhaps not if you've turned IPFW off entirely.  Five minutes is also  
about right if you've got dynamic routing or a second DHCP server  
lurking enabled somewhere and is sending out a bad route.

Are you sure the router is OK?


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