[Dnsmasq-discuss] help needed in dnsmasq problem

Atul Gupta atul14.kumar at gmail.com
Thu May 17 15:38:54 BST 2012


Hi,
One server in my dnsmasq.conf file is never tried for sending the query.

  Below is my config file:-
  # Management DNS servers [2]
  server=/ody.engr.net/2001:5b0:ffff:fff6::25 at 2001:05b0:3efe:2e1f:0000:0000:004c:4d0d
  server=/ody.engr.net/2001:5b0:ffff:fff6::26 at 2001:05b0:3efe:2e1f:0000:0000:004c:4d0d
  address=/controlcenter.com/192.168.0.1
  address=/controlcenter.com/fd0d:edc3:e12a:0000::1
  address=/www.odyagentid.com/66.82.162.22
  cache-size=1000
  max-ttl=60
  neg-ttl=60
  no-resolv
  max-ipperhost=5
  server=192.168.160.20 at 172.20.54.1
  server=192.168.160.20 at 172.20.54.1
  server=2001:5b0:3eff:fff7::20 at 2001:05b0:3e1a:8000:0280:aeff:fe4b:0277
  server=2001:5b0:3eff:fff7::20 at 2001:05b0:3e1a:8000:0280:aeff:fe4b:0277
  I guess dnsmasq adds all servers in the daemon->servers list and picks
  servers from there while forwarding the query. My question is that if
  there is any scenario where dnsmasq removes any server from this
  (daemon->servers) list.As this is what seems to happening in my case
  i.e. server 192.168.160.20 is never being tried to forward the query.
  restart of dnsmasq solves this problem.
  Also when this problem comes and dump cache, there is no entry for
  192.168.160.20. below is dump

  cache size 1000, cache insertions 2644, re-used unexpired cache entries 0
  queries forwarded 1301, queries answered locally 37
  server 2001:5b0:ffff:fff6::25#53: queries sent 0, retried or failed 0, used 0
  server 2001:5b0:ffff:fff6::26#53: queries sent 0, retried or failed 0, used 0
  server 2001:5b0:3eff:fff7::20#53: queries sent 680, retried or
failed 0, used 0
  Host                                     Address
   Flags     Expires

  Please ignore the counters next to  "queries sent", "cache insertions"
  etc. as they may be inconsistent, but real problem is that i don't see
  192.168.160.20 in this list.

  Please help!!!!
  Regards,
  Atul.



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