NetworkManager crashed with SIGSEGV in nl_addr_get_len()

[Graham Inggs]

Binary package hint: network-manager

After upgrading from Alpha 6 to Beta, then downloading the latest updates and then restarting, NetworkManager crashed immediately after I logged in.
I am able to ping other machines on my network, but am unable to resolve DNS names.

ProblemType: Crash
Architecture: amd64
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/sbin/NetworkManager
Gconf:

NonfreeKernelModules: nvidia
Package: network-manager 0.7~~svn20081004t225044-0ubuntu1
ProcAttrCurrent: unconfined
ProcCmdline: /usr/sbin/NetworkManager
ProcEnviron: PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
Signal: 11
SourcePackage: network-manager
StacktraceTop:
 nl_addr_get_len () from /usr/lib/libnl.so.1
 ?? () from /usr/lib/libnl.so.1
 rtnl_route_del () from /usr/lib/libnl.so.1
 nm_system_device_set_from_ip4_config ()
 nm_device_set_ip4_config ()
Title: NetworkManager crashed with SIGSEGV in nl_addr_get_len()
Uname: Linux 2.6.27-5-generic x86_64
UserGroups:

WpaSupplicantLog:

[Apport retracing service (apport)]

StacktraceTop:?? ()
?? ()
?? ()
?? ()
?? ()

[Alexander Sack (asac)]

do you know how to reproduce? if so, please follow instructions at https://wiki.ubuntu.com/DebuggingNetworkManager#Debugging%20Crashes

[Graham Inggs (ginggs)]

I'll see if I'm able to reproduce the fault. It seems my network configuration got mangled during the upgrade. Network Manager was displaying the name of my wired network connection (eth3) as "ifupdown eth2".

[Rani Hod (raenye)]

This just happened twice to me. I wasn't doing anything particular when the "report crash" pop-up came up.

I was connected to a WPA-protected AP.
iwconfig still showed me as connected, but DNS and HTTP didn't work.

Workaround:
sudo /etc/init.d/NetworkManager restart