Public bug reported: 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 ** Affects: network-manager (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug precise -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1041221 Title: Network Manager consumes a lot of CPU in IPv6 networks To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1041221/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
