Reproduced the issue using the 3.3.7 mainline build from the kernel PPA. Upgrading to the version from -proposed indeed suppresses the errors, connectivity is still working as expected.
** Tags removed: verification-needed ** Tags added: verification-done -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/988183 Title: Logs full with "ICMPv6 RA: ndisc_router_discovery() failed to add default route" Status in NetworkManager: Fix Released Status in “network-manager” package in Ubuntu: Fix Released Status in “network-manager” source package in Precise: Fix Committed Status in “network-manager” package in Fedora: Unknown Bug description: [Impact] Minor impact, this should only be affecting users of the kernel mainline packages since we're not shipping kernel 3.3.0 where the issue is presumed to occur, take care of letting these users also benefit from stable connections since they may need these kernels for new hardware support (and kernels that may be backported in the future). This only affects IPv6-enabled network where the kernel expects to setup a default route by itself and doesn't play nice with something else modifying the routes. [Development Fix] Fixed upstream, as http://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=77de91e5a8b1c1993ae65c54b37e0411e78e6fe6. See https://bugzilla.gnome.org/show_bug.cgi?id=673476 (upstream bug). This change only affects NetworkManager's code, doesn't require rebuild of any dependant package. [Stable Fix] See above "Development fix". [Test Case] 1) Connect to an IPv6 network with a kernel 3.3.0 or higher. 2) Observe behavior in 'ip route -6' and messages in /var/log/syslog. Wireless connections should remain stable. [Regression Potential] Only IPv6 could be affected, no potential for regression expected for IPv4 routing or other parts of NetworkManager. Routing may be incorrect, resulting in the wrong device taking precedence for data being sent over the network when IPv6 is in use; IPv6 connections (or connections altogether, if IPv6 is set to "Required" (which is not by default)) may be torn down or unavailable due to invalid routes. --------- Hi, I am observing a lot of "ICMPv6 RA: ndisc_router_discovery() failed to add default route" in my logs. After a fresh reboot: $ dmesg | grep "ICMPv6 RA: ndisc_router_discovery() failed to add default route." | wc -l 46 First, I thought this is a kernel issue, but than I found a bug-report in the Red Hat BTS in [1]. Just FYI: I am on Linux-3.4-rc4 - with the original Ubuntu/precise kernel I haven't seen this which is linux-image-3.2.0-23-generic (3.2.0-23.36). - Sedat - [1] https://bugzilla.redhat.com/show_bug.cgi?id=785772 ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: network-manager 0.9.4.0-0ubuntu3 Uname: Linux 3.4.0-rc4-4-generic x86_64 ApportVersion: 2.0.1-0ubuntu5 Architecture: amd64 Date: Wed Apr 25 08:40:50 2012 ExecutablePath: /usr/sbin/NetworkManager InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301) IpRoute: default via 192.168.178.1 dev wlan0 proto static 169.254.0.0/16 dev wlan0 scope link metric 1000 192.168.178.0/24 dev wlan0 proto kernel scope link src 192.168.178.22 metric 2 NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true ProcEnviron: TERM=linux PATH=(custom, no user) LANG=de_DE.UTF-8 SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) nmcli-con: NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY DBUS-PATH myCastle-WLAN WPA (Wireless LAN) a74880ae-a336-4133-9454-b0376557cb6c 802-11-wireless 1335335775 Mi 25 Apr 2012 08:36:15 CEST yes no /org/freedesktop/NetworkManager/Settings/0 nmcli-dev: DEVICE TYPE STATE DBUS-PATH eth0 802-3-ethernet unmanaged /org/freedesktop/NetworkManager/Devices/1 wlan0 802-11-wireless connected /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 To manage notifications about this bug go to: https://bugs.launchpad.net/network-manager/+bug/988183/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
