[Bug 998712] Re: domain name completion broken when dnsmasq is used

[Wolf Rogner]

Thomas,

I understand that you have not set up a simulation test bed and that
your questions are directed to understand the problem. You have found
out that you may have misinterpreted some pieces.

Reggie seems to have the same problem as I (and to my knowledge more
than a dozen of others) have.

I have described the issues dnsmasq has somewhere else.

Here is another observation I can offer:

eliminating dnsmasq makes machines respond within seconds. Network
reconnect after resume from sleep as well as after a reboot works
immediately. Thunderbird (another issue I submitted) connects to the
mail server without problems.

using dnsmasq, network reconnect (over WLAN) takes significantly longer (almost 5 secs).
Even though ping and dig resolv host names correctly (in out case s4 or mail.rsb.intern) Thunderbird does not connect. That implies that the connection dnsmasq and resolver libraries is broken as well. It works eventually (say after 1min or 5, not preproducably different). Curiously it stops working again even when the machine continues to operate.

Again: This was tested on several machines.
And, yes: Disabling dnsmasq in NetworkManager.conf resolves ALL issues at once: Network reconnect in less than a second, name resolution to mail and mail.rsb.intern works fine (what else should the search path hold?).

Referring to my reluctance of giving more than the basic information:
Everyone can read Launchpad entries. This is a severe security issue.

I try to be helpful but if you do not have the means to provide
significant testing equipment, maybe taking dnsmasq out of an LTS would
be the better solution.

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https://bugs.launchpad.net/bugs/998712

Title:
  domain name completion broken when dnsmasq is used

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