[Dnsmasq-discuss] dnsmasq forwards requests for unknown hosts in its own domain

[Gerrit Kühn]

On Wed, 04 Nov 2009 11:41:03 +0000 Simon Kelley <simon at thekelleys.org.uk>
wrote about Re: [Dnsmasq-discuss] dnsmasq forwards requests for unknown
hosts in its own domain:

SK> > Does anyone here have a hint for me how to setup this correctly and
SK> > how to prevent queries for unknown hosts being sent back from the
SK> > intranet dnsmasq?

SK> local=/intranet.my.domain/
SK> on the intranet server will stop it forwarding any requests for that 
SK> domain. I think that's what you need.

This fixed the directly triggerable ping-pong between the two servers. Now
I still see these requests sometimes:

Nov 11 10:30:19 theq dnsmasq[97791]: query[PTR]
db._dns-sd._udp.0.64.168.192.in- addr.arpa from 10.117.15.254
Nov 11 10:30:19 theq dnsmasq[97791]: forwarded
db._dns-sd._udp.0.64.168.192.in-a ddr.arpa to 10.117.15.254

These requests/forwards won't stop and put quite some load on dnsmasq
running on 10.117.15.254. After stopping, waiting some seconds and
starting again dnsmasq on 192.168.64.254, everything is back to normal
(for a day or so, until this starts again).

Can anyone explain to me what might cause these requests and how I can
prevent them either from being requested at all or at least from being
forwarded?


cu
  Gerrit