This bug was fixed in the package network-manager -
0.9.6.0~git201207271115.edb85e9-0ubuntu1
---------------
network-manager (0.9.6.0~git201207271115.edb85e9-0ubuntu1) quantal; urgency=low
* upstream snapshot 2012-07-27 11:15:54 (GMT)
+ edb85e972051aff3cfcd5990ea1bd8a28dddc9d9
- dnsmasq: allow custom configuration via /etc/NetworkManager/dnsmasq.d
* debian/patches/dnsmasq-dbus-updates.patch: do dnsmasq server updates via
DBus, instead of respawning the process every time. (LP: #1004775)
* debian/patches/dnsmasq-vpn-dns-filtering.patch: refreshed.
* debian/patches/nm-change-dnsmasq-parameters.diff: refreshed.
* debian/patches/add_sendsigs_omissions.patch: refreshed.
-- Mathieu Trudel-Lapierre <mathieu...@ubuntu.com> Mon, 30 Jul 2012 09:13:32
-0400
** Changed in: network-manager (Ubuntu Quantal)
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1004775
Title:
NetworkManager restarts dnsmasq and adds host route on every IPv6
route lookup
Status in “network-manager” package in Ubuntu:
Fix Released
Status in “network-manager” source package in Precise:
Triaged
Status in “network-manager” source package in Quantal:
Fix Released
Bug description:
NetworkManager stops and starts dnsmasq very frequently (every few
minutes). During the brief window that dnsmasq is restarting,
hostname resolution doesn't work. dnsmasq is getting restarted
frequently enough that I see brief hostname resolution errors in
Chrome several times a day during normal web browsing.
This is on Precise with network-manager 0.9.4.0-0ubuntu4 and dnsmasq-
base 2.59-4.
The frequent restarts seem to be triggered by IPv6 route
advertisements on my network. (See log snippet below.) When
NetworkManager gets a route advertisement, it reconfigures everything.
In the case of dnsmasq, this means stopping dnsmasq, writing a new
config file, and starting dnsmasq. NetworkManager should restart
dnsmasq only if it its configuration changes.
I'm attaching a snippet from /var/log/daemon.log on my system that
demonstrates a restart. This is with debug logging configured in
/etc/NetworkManager/NetworkManager.conf.
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https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1004775/+subscriptions
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