[Samba] xp/2003 explorer freezes browsing shares on Samba 3.2 ipv6 hosts

[David Holder]

Jeremy,

We tested Fedora including 7 and 8.

I'll take a look at the network trace too. Name resolution is an area 
which can be problematic in mixed networks.

Pim, please could you send a copy of your /etc/resolv.conf?

Regards,
David
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Jeremy Allison wrote:
> On Tue, Jul 15, 2008 at 10:39:21PM +0200, Pim Zandbergen wrote:
>   
>> After upgrading one of our servers from Fedora 7 to Fedora 9,
>> from Samba 3.0 to 3.2.0-2.17.fc9 I noticed this strange phenomena:
>>
>> Windows 2003 and XP clients freeze when you type
>> "\\server" in an explorer address bar where "server" is the
>> name of the Samba 3.2 host.
>>
>> Windows 2000 clients don't freeze.
>>
>> 2003/XP clients don't freeze when you enter "\\server\share"
>>
>> They un-freeze if you restart samba, showing all the shares.
>> Refreshing freezes them again.
>>
>> Here are some details on our network
>> - all samba 3.0 and 3.2 hosts are ipv6 capable
>> - some Windows clients are ipv6 capable
>> - DNS hostnames resolve to both ipv4 and ipv6 addresses
>> - NetBIOS over TCP is disabled, nmbd not running
>> - all samba servers are ADS clients in a 2003 domain
>>
>> Here are some findings:
>> - it does not matter whether clients are ipv6 capable or not
>> - removing AAAA records for samba hosts does not help
>> - re-enabling NetBIOS over TCP does not help
>> - disabling ipv6 on the samba host does fix the problem
>>
>> Disabling ipv6 on the host was not easy. I had to
>> prevent the ipv6 module from being loaded.
>>
>> Has anyone else seen this behaviour?
>>     
>
> No, IPv6 was tested by Dr. David Holder on Windows
> platforms vs. Samba on Linux and FreeBSD. Not sure
> what distro's though.
>
> Can you get a debug level 10 log from smbd on
> the server when IPv6 is enabled against a client
> that freezes. Also an IPv6 network capture would
> help.
>
> Thanks,
>
> 	Jeremy.
>