It's not the same issue.
This bugs needs a bit more triaging to find the original report for this
issue for Precise; and it's fix released in Quantal (12.10).
** Also affects: network-manager (Ubuntu Precise)
Importance: Undecided
Status: New
** Changed in: network-manager (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1041221
Title:
Network Manager gobbles CPU very frequently restarting dnsmasq in IPv6
networks
Status in “network-manager” package in Ubuntu:
Fix Released
Status in “network-manager” source package in Precise:
New
Bug description:
Hi,
this may be related to this bug:
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/958519
I lost my IPv6 some time ago, after my router was broken. I have now
my IPv6 connection running again and to set the mininum time between
router advertisements to 10s to be not affected too strong from the
mentioned bug. The fix to this bug was simply suppressing error
messages.
But I was now curius what is happening at the network of my
university, which got (at least some parts) IPv6. Here network manager
eats up to 80% cpu, because it is restarting dnsmasq every second. If
I disable dnsmasq in /etc/NetworkManager/NetworkManager.conf the cpu
load drops to 20% to 30%. (syslog attached)
You should fix this, because this eats the battery of my laptop and
ubuntu 12.04 will be used a couple of years in which IPv6 will get
more and more deployed.
dgf
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: network-manager 0.9.4.0-0ubuntu4.1
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
Uname: Linux 3.2.0-29-generic x86_64
ApportVersion: 2.0.1-0ubuntu12
Architecture: amd64
Date: Fri Aug 24 15:44:24 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
IpRoute:
default via 134.169.35.65 dev wlan0 proto static
134.169.35.64/26 dev wlan0 proto kernel scope link src 134.169.35.124
metric 2
169.254.0.0/16 dev wlan0 scope link metric 1000
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: network-manager
UpgradeStatus: Upgraded to precise on 2012-02-14 (191 days ago)
nmcli-dev:
DEVICE TYPE STATE DBUS-PATH
wlan0 802-11-wireless connected
/org/freedesktop/NetworkManager/Devices/1
eth0 802-3-ethernet unavailable
/org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE
WIFI WWAN-HARDWARE WWAN
running 0.9.4.0 connected enabled enabled
enabled enabled enabled
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