Red Hat Bugzilla – Bug 456834
Loss of internet connectiviy, hangs at unloading iptables
Last modified: 2009-06-03 04:42:49 EDT
Description of problem:
My connection stalls. NetworkManager will still show I'm connected, but won't
reconnect, failing at getting an IP.
The only way I know how to fix it when this happens is to reboot, but it then
hangs on iptables: Unloading module. It will hang there indefinitely and I have
to power off at this point.
When this issue is not happening, I can reboot with no errors.
Version-Release number of selected component (if applicable):
Happens 1-2 times daily.
Steps to Reproduce:
1. Connect to wireless using Cisco Aironet with NetworkManager.
2. Use connection for several hours.
3. Observe sudden drop in connectivity and issue described above.
Network connectivity is unstable and reboot hangs.
Stable network connectivity and successful reboots.
Using an IBM ThinkPad T30 with Cisco Aironet card.
What exactly is hanging? The unload of a kernel module?
That is what was hanging on shutdown. I set unload to "No" in the conf and I can shut it down with no errors, now hen I lose connection. The connection loss still occasionally happens, and when it does I must reboot to reconnect. it will actually still say I'm connected to a network, but I won't have any internet access, and won't be able to reconnect to the network with NetworkManager. It seems to happen when the card is under a load for a time, such as when seeding torrents.
Sorry to be more specific, it is the iptables unloading the is hanging. It happens for both IPv6 and IPv4 (If I disable IPv6 it hangs at IP instead).
Is there a hanging modprobe command?
How would I check for this? The only thing in my modprobe.conf is aliases related to my sound card.
Have a look at the output of "ps aux". Is there is a "modprobe -r" command hanging around?
This bug entry was in needinfo for some time. Closing due to user inactivity as
"NOT A BUG".