touch-packages team mailing list archive

[Thomas Hood <1414887@xxxxxxxxxxxxxxxxxx>]

> First, as suggested by the author of dnsmasq, the `local-service` 
> should be in the default configuration. However, Ubuntu 14.10
> doesn't have that

What the man page exactly says is that local-service "only has effect
i[f] there are no --interface --except-interface, --listen-address or
--auth-server options".


> Here is what I found out how dnsmasq is started in Ubuntu 14.10:
> /usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hosts --bind-interfaces --pid-file=/run/sendsigs.omit.d/network-manager.dnsmasq.pid --listen-address=127.0.1.1 [...]

This is not the dnsmasq process started by the dnsmasq package. It is
the local forwarding dnsmasq process started by NetworkManager. If your
complaint is that the local forwarding dnsmasq process started by
NetworkManager doesn't respond to queries coming from the network then
the answer is that this process is not supposed to do that. But I don't
think that this is your complaint because you said that you didn't have
the problem in Ubuntu 13.10.

On my machine, the dnsmasq process started by the dnsmasq package looks
like this in ps -elf output

    /usr/sbin/dnsmasq -x /var/run/dnsmasq/dnsmasq.pid -u dnsmasq -r
/var/run/dnsmasq/resolv.conf -7 /etc/dnsmasq.d,.dpkg-dist,.dpkg-old
,.dpkg-new --local-service

As no --interface --except-interface, --listen-address or --auth-server
option is given, the --local-service option is active.

In order to deactivate the local-service feature, I suggest you
configure dnsmasq with one of the above mentioned options.


** Changed in: dnsmasq (Ubuntu)
       Status: New => Incomplete

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to dnsmasq in Ubuntu.
https://bugs.launchpad.net/bugs/1414887

Title:
  dns query from localnetwork ignored

Status in dnsmasq package in Ubuntu:
  Incomplete

Bug description:
  Hi,

  I followed the following to config dnsmasq as DHCP and DNS server
  http://sfxpt.wordpress.com/2013/11/30/dnsmasq-installation-
  configuration-5/

  It works well till Ubuntu 13.10. However, with Ubuntu 14.10, the dns
  query from localnetwork will always timeout. The configurations are
  exactly the same, What could be the problem?

  From within localnetwork:

  ~~~
  $ dig google.ca

  ; <<>> DiG 9.9.5-4.3-Ubuntu <<>> google.ca
  ;; global options: +cmd
  ;; connection timed out; no servers could be reached

  dig @192.168.2.100 maroon

  ; <<>> DiG 9.9.5-4.3-Ubuntu <<>> @192.168.2.100 maroon
  ; (1 server found)
  ;; global options: +cmd
  ;; connection timed out; no servers could be reached
  ~~~

  On the DNS sever itself:

  ~~~
  $ dig google.ca @127.0.0.1
  ...
  ;; ANSWER SECTION:
  google.ca.              299     IN      A       173.194.43.111
  ...
  ;; Query time: 50 msec
  ;; SERVER: 127.0.0.1#53(127.0.0.1)

  $ dig @192.168.2.100 maroon
  ...
  ;; ANSWER SECTION:
  maroon.                 0       IN      A       192.168.2.100

  ;; Query time: 1 msec
  ;; SERVER: 192.168.2.100#53(192.168.2.100)
  ...
  ~~~

  This is the debug output from dnsmasq log:

  ~~~
  Jan  1 13:26:10 maroon dnsmasq[2833]: reply google.ca is 173.194.43.119
  Jan  1 13:26:10 maroon dnsmasq[2833]: reply google.ca is 173.194.43.120
      *** DEBUG 2015-01-01 13:26:21-05:00 DEBUG ***
  Jan  1 13:27:42 maroon dnsmasq[2833]: query[A] maroon from 192.168.2.100
  Jan  1 13:27:42 maroon dnsmasq[2833]: /etc/dnsmasq.hosts maroon is
  192.168.2.100
      *** DEBUG 2015-01-01 13:28:19-05:00 DEBUG ***
  ~~~

  All other dns queries from localnetwork did not generate any log entries.
  So, because the local dns query work, I think something is blocking the dnsmasq
   from sending the dns query results back to localnetwork. What could it
  be?

  I didn't limit the dnsmasq listen address:

  ~~~
  $ grep listen-address /etc/dnsmasq.conf /etc/dnsmasq.d/*
  /etc/dnsmasq.conf:#listen-address=
  ~~~

  My /etc/hosts.deny and hosts.allow files are untouched either, and I can
  ping my DNS server, and ssh into its IP address as well. So I think the
  blocking is only at the DNS level since other access are just fine. It is
  not because of iptables rules either:

  $ sudo iptables-save | wc
        0       0       0

  I've installed dnsmasq on two different machines, one being freshly
  installed today, and both of them are showing exactly the  same
  symptom. Again, it only happens to Ubuntu 14.10. It was working well
  till Ubuntu 13.10 before.

  I've run out of all the possibilities.
  What could be the problem?

  Thanks

  $ lsb_release -a
  No LSB modules are available.
  Distributor ID: Ubuntu
  Description:    Ubuntu 14.10
  Release:        14.10
  Codename:       utopic

  $ apt-cache policy dnsmasq
  dnsmasq:
    Installed: 2.71-1
    Candidate: 2.71-1
    Version table:
   *** 2.71-1 0
          500 http://us.archive.ubuntu.com/ubuntu/ utopic/universe amd64 Packages
          100 /var/lib/dpkg/status

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1414887/+subscriptions