Network Manager gobbles CPU very frequently restarting dnsmasq in IPv6 networks
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
network-manager (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Precise |
Won't Fix
|
Undecided
|
Unassigned |
Bug Description
Hi,
this may be related to this bug:
https:/
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/NetworkMan
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
ProcVersionSign
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.
[main]
NetworkingEnab
WirelessEnable
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/freedeskto
eth0 802-3-ethernet unavailable /org/freedeskto
nmcli-nm:
RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN
running 0.9.4.0 connected enabled enabled enabled enabled enabled
summary: |
- Network Manager consumes a lot of CPU in IPv6 networks + Network Manager gobbles CPU very frequently restarting dnsmasq in IPv6 + networks |
here is syslog with disabled dnsmasq