Network connects and disconnects rapidly, both wired and wifi

Status changed to 'Confirmed' because the bug affects multiple users.

Disabling IPv6 worked for me, but it also works if you just tell Network Manager to not require IPv6 to complete for the connection to stay up. For some reason Network Manager is segfaulting when these steps are not taken. Oddly enough, it worked out of the box on my netbook. I cannot re-create the problem on my netbook, it works just fine when I have that box checked and IPv6 set to Automatic.

Okay, I'll try that. Thanks. I'll report if it helps or not.
I haven't been able to disable it yet. Upon boot now it says the system
network services are not compatible with this version.
On Mar 15, 2013 3:20 PM, "Miles Robinson" <email address hidden>
wrote:

> Disabling IPv6 worked for me, but it also works if you just tell Network
> Manager to not require IPv6 to complete for the connection to stay up.
> For some reason Network Manager is segfaulting when these steps are not
> taken. Oddly enough, it worked out of the box on my netbook. I cannot
> re-create the problem on my netbook, it works just fine when I have that
> box checked and IPv6 set to Automatic.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1155388
>
> Title:
> Network connects and disconnects rapidly, both wired and wifi
>
> Status in “network-manager” package in Ubuntu:
> Confirmed
>
> Bug description:
> Fresh update of 13.04, now network connects sporadically.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 13.04
> Package: network-manager 0.9.8.0-0ubuntu1
> ProcVersionSignature: Ubuntu 3.8.0-12.21-generic 3.8.2
> Uname: Linux 3.8.0-12-generic i686
> ApportVersion: 2.9.1-0ubuntu1
> Architecture: i386
> Date: Thu Mar 14 20:54:16 2013
> IfupdownConfig:
> # interfaces(5) file used by ifup(8) and ifdown(8)
> auto lo
> iface lo inet loopback
> InstallationDate: Installed on 2013-02-17 (25 days ago)
> InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha i386 (20130211)
> InterestingModules: b44
> IpRoute:
> default via 192.168.1.1 dev eth0 proto static
> 169.254.0.0/16 dev wlan0 scope link metric 1000
> 192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.147
> metric 1
> 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.145
> metric 9
> MarkForUpload: True
> 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: No upgrade log present (probably fresh install)
> nmcli-dev:
> DEVICE TYPE STATE DBUS-PATH
> wlan0 802-11-wireless connected
> /org/freedesktop/NetworkManager/Devices/1
> eth0 802-3-ethernet connected
> /org/freedesktop/NetworkManager/Devices/0
> nmcli-nm:
> RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE
> WIFI WWAN-HARDWARE WWAN
> running 0.9.8.0 connected enabled enabled
> enabled enabled disabled
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1155388/+subscriptions
>

it still happens even IPv6 is disabled

i think is problem causes by nf_conntrack

UPDATE: problem has gone when I'm using older kernel 3.5.0-27-generic

is this related to bug #973845 ?
https://bugs.launchpad.net/ubuntu/+bug/973845