I have experienced the same bug on multiple brands of NIC hardware both wired and wireless. Observing the live log, it always occurs 30 minutes after boot. My DHCP server renews leases after an hour so I did not see a correlation with the network configuration.
Googling this error reveals similar issues across several major distros so this may be an upstream bug. My early Virtualbox tests did not show an issue with a bridged adapter. Re-running those tests again to verify. I also disabled Avahi-daemon in a troubleshooting attempt and NM still failed with the same error. -- 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/1461015 Title: Wired disconnects due to add_object(): Netlink error adding 0.0.0.0/0 Status in network-manager package in Ubuntu: Confirmed Bug description: I have a Lenovo Thinkpad E540 with r8169 wired onboard networking. After 15-30 minutes use the network stops working. There are no messages in dmesg, link stays up etc. This is output to journal: kesä 02 12:59:42 villenthinkpad avahi-daemon[925]: Withdrawing address record for 192.168.125.60 on eth0. kesä 02 12:59:42 villenthinkpad avahi-daemon[925]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.125.60. kesä 02 12:59:42 villenthinkpad avahi-daemon[925]: Interface eth0.IPv4 no longer relevant for mDNS. kesä 02 12:59:42 villenthinkpad NetworkManager[921]: <error> [1433239182.454827] [platform/nm-linux-platform.c:1714] add_object(): Netlink error adding 0.0.0.0/0 via 192.168.125.1 dev eth0 metric 1024 mss 0 src kesä 02 12:59:42 villenthinkpad NetworkManager[921]: inet default table main kesä 02 12:59:42 villenthinkpad NetworkManager[921]: priority 0x400 protocol static kesä 02 12:59:42 villenthinkpad NetworkManager[921]: nexthop via 192.168.125.1 dev 2 Disconnecting and reconnecting the cable solves the issue until next reboot, so I don't think it's a DHCP configuration issue. Other PC's on the network work fine. This has also been reported as kernel bug #1459985 as it's still unknown what causes the issue. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: network-manager 0.9.10.0-4ubuntu15.1 ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6 Uname: Linux 3.19.0-18-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 CurrentDesktop: X-Cinnamon Date: Tue Jun 2 13:09:36 2015 EcryptfsInUse: Yes IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2015-02-12 (109 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) IpRoute: default via 192.168.125.1 dev eth0 proto static metric 1024 169.254.0.0/16 dev eth0 scope link metric 1000 192.168.125.0/24 dev eth0 proto kernel scope link src 192.168.125.60 192.168.135.1 dev wlan0 proto static scope link metric 1024 NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true SourcePackage: network-manager UpgradeStatus: Upgraded to vivid on 2015-05-12 (20 days ago) nmcli-dev: DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH eth0 ethernet connected /org/freedesktop/NetworkManager/Devices/1 Wired connection 1 2ef5399f-13a6-4337-9f55-d0d2e44cc43b /org/freedesktop/NetworkManager/ActiveConnection/2 wlan0 wifi connected /org/freedesktop/NetworkManager/Devices/2 T2 a59517ed-1d2b-4c2e-99a5-ee1f3afdc311 /org/freedesktop/NetworkManager/ActiveConnection/1 lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/0 -- -- -- nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1461015/+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
