[Samba] Long Delay on Fresh Windows 7 Clients

David Holder david.holder at erion.co.uk
Tue May 4 02:33:06 MDT 2010


> share by typing its static IP address: \\\sharename.
With this form of the connection UNC Windows will only ever use IPv4,
IPv6 will not be involved.

Dr David Holder CEng FIET MIEEE

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Kevin Keane wrote:
> It may also be network discovery, and/or an IPv6 issue. Windows 7 tries to default to IPv6. There is no NETBIOS or WINS in IPv6, so DNS is pretty much mandatory (there also is Network Discovery, which is basically UPnP renamed).
> My guess is that in your case, Windows 7 first tries to resolve to an IPv6 address using DNS. Then it probably tries to look for it with UPnP. Only when those two fail would it use IPv4.
> Disabling IPv6 is really a bad idea, but with Samba it may be your only option.
>> -----Original Message-----
>> From: samba-bounces at lists.samba.org [mailto:samba-
>> bounces at lists.samba.org] On Behalf Of smbatsc at gmx.com
>> Sent: Monday, May 03, 2010 3:52 PM
>> To: samba at lists.samba.org; michele.petrazzo at unipex.it
>> Subject: Re: [Samba] Long Delay on Fresh Windows 7 Clients
>> Thank you very much Michele. Because it's not trivial for me to
>> introduce DNS for the local Samba server, I just tried accessing the
>> share by typing its static IP address: \\\sharename.
>> I still get the same delay.
>> Perhaps it's not DNS resolution that's causing that?
>> Thanks,
>> Daniel
>> mich... at unipex.it wrote:
>>  smba... at gmx.com wrote:
>>> When I type \\sambahost\sharename, a prompt for the username and
>>> password will eventually appear (and let me authenticate
>>> successfully) but it takes almost forever (i.e. 1-5 minutes) until
>>> that prompt dialog box appears.
>> Last week week my customer call me for the same problem where I
>> installed an "old" version of samba (like yours) without local dns.
>> After some tests, a simple bind9 + master local zone and reversed one
>> solved the problem.
>> I don't know further technical details, but I presume that 7 _need_ a
>> reply from a dns. If it not find a good one, before gone to timeout and
>> switch to wins resolution, it took *a lot of time*
>> --
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