error sending response: not enough free resources

Dwayne Hottinger dhottinger at harrisonburg.k12.va.us
Fri Sep 7 15:34:09 UTC 2012

I installed a replacement dns/dhcp server in May.    I started seeing these
messages in my named.log: error sending response: not enough free resources
Ip addresses varied.   Messages usually corresponded to periods when I
would expect there to be a higher load (after class changes, lab logins,
etc.).   I googled around and found some info relating to network cards
either being bad, not having enough buffers, etc.  So I spent a couple of
days building a new dns.dhcp server with gig cards.   Just got everything
online, server is handing out ip's and answering dns query's.  Im seeing
the same behaviour.    Is this something I should worry about, or is there
some way to fix it?  Im not able to correspond it to any network issues at
this time.

The server is service 8 vlans through 8 virtual interfaces plugged into a
cisco layer 3 switch.



Dwayne Hottinger
Network Administrator
Harrisonburg City Public Schools
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