The issue reported by Steve Atwell might have been resolved by
installing package network-manager 0.9.4.0-0ubuntu4.1; where we apply
patches to better handle route changes with new kernels, as well as
RDNSS/DNSSL fixes.
Could you please verify that all packages are properly updated and
attach /var/log/syslog to this bug report for further information?
It may be useful also to include debugging logs; which can be enabled as
such (while NetworkManager is running):
sudo /usr/lib/NetworkManager/debug-helper.py --nm debug
This will generate all the debugging information for NM in
/var/log/syslog.
** Changed in: network-manager (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1004775
Title:
NetworkManager restarts dnsmasq on every IPv6 route advertisement,
thus very frequently
Status in “network-manager” package in Ubuntu:
Incomplete
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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