How to report IPv6 bug to Microsoft - Vista and 7 won't "undeprecate" a prefix

[Christian Hahn]

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Hello Bernhard,

> Every once in a while a Windows 7 box gets broken IPv6. Symptoms are a
> deprecated address and no default route. It pretty much acts like it
> does not receive the RAs anymore. But the RAs are there (verified with
> Wireshark on the affected client and from other clients which work just
> fine). Most of the times the issue can be fixed by disabling/reenabling
> the network interface on the client.
> 
> Mostly we have seen this issue with clients that have been suspended a
> few times, but today I had a client that had just rebooted. Basically
> the expiry timers started running when the box was booted up and never
> got refreshed.
I assume it's similar to what we discovered. If you send a client in standby and
wake it up after time X (where X is defined as ValidLifetime > X >
PreferredLifetime), IPv6 is broken.

cheers,
Christian

> 
> Anyone got similar experiences?
> 
> Bernhard

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