Re: NetworkManager recycling connections

[Bill C Riemers <briemers redhat com>]

I found the problem.  I was wrong about needing to toggle the flag after every boot.

Here is the problem, network manager is using the IPV6INIT=no flag, as the flag IPV6 - IGNORE on a device.   But it looks like to me that flag only controls the use of DHCPv6.   Since DHCPv6 is not required when using Router Advertisements, with "IPV6INIT=no" my wifi comes up successfully with an IPv6 configuration.   If I use IPV6INIT=yes, then it also comes up successfully, but it waits around for a DHCPv6 that does not exist.  After about 15-20 minutes that times out so it recycles the working connection.

So in essence the problem is the IPV6INIT flag is the wrong flag to be using for enabling and disabling IPv6 for a device.

The following seems to map what the "IPV6" Methods drop downs really do:

Ignore -> Configure with Router Advertisements
Automatic -> Configure with Router Advertisements and then reconfigure with DHCPv6.  If DHCPv6 fails recycle the connection after a long timeout.

I haven't tried any of the other options.

Here is what is expected:

Ignore -> Configure with private address, or disable IPv6 for the device
Automatic -> Configure with Router Advertisements or DHCPv6.  (Whichever succeeds first.)


Bill


On 11/14/2011 02:05 PM, Bill C Riemers wrote:
> I was wondering if anyone could suggest where to like to find the cause of Bug 753482:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=753482
>
> Basically the problem is that when IPv6 is enabled on my wifi connection, every 15-20 minutes there is an "Activation Failed" message, and the connection recycles.   If instead I leave IPv6 disabled for wifi then it works fine.  In fact a work around is to connect to wifi with IPv6 enabled, then disabled IPv6 for that connection an reconnect.   At that point everything works, including IPv6 traffic.   But of course that is a pain as the procedure has to be repeated after every reboot.  Chances are this also results in router advertisements being ignored, so if I change the IPv6 configuration on the router, I might have to repeat this procedure.   Is the case of a home network, it is just a nuisance, as I know when I change something on my router.   However, for a business office or such, this could be a serious problem.
>
> Strangely the wired connection does not have the same problem.   I'm not sure if this is a bug in Network Manager, the kernel, or another package.
>
>
> Bill
>
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