samba - Apr 2017 - IPv6?

I noticed that samba is listening on IPv6, so I became curious and
wondered if I could actually use it, and so far, it looks like it isn't
usable.

Running nbtstat -A fe80::216:3eff:fe6f:1f3a on Windows returns the
stupid message that the address must be in the a.b.c.d format.  I then
tried using nbtlookup from linux:

nmblookup -S -U '[fe80::216:3eff:fe6f:1f3a]' \*
10.1.1.232 *<00>
Looking up status of 10.1.1.232
        DEVSERV2        <00> -         B <ACTIVE>


Why is it reporting the IPv4 address when I queried it with the IPv6
address?  It looks like nmbd is listening on IPv6, but does not or is
not able to report an IPv6 address.

Hi Phil,

NBT name resolution is IPv4 only. Samba does work over IPv6, but NetBIOS name
resolution is and always will be IPv4 only. It is a feature of the protocol not
Samba.

Take a look at
http://www.ipv6consultancy.com/ipv6blog/wp-content/uploads/sambaxp-2015-deploying-ipv6-only-samba-4-environments-v0_4.pdf
and other presentations on the subject at
http://www.ipv6consultancy.com/ipv6blog/?cat=4.

Best Regards,
David
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-----Original Message-----
From: samba [mailto:samba-bounces at lists.samba.org] On Behalf Of Phil Susi via
samba
Sent: 11 April 2017 13:54
To: samba at lists.samba.org
Subject: [Samba] IPv6?

I noticed that samba is listening on IPv6, so I became curious and wondered if I
could actually use it, and so far, it looks like it isn't usable.

Running nbtstat -A fe80::216:3eff:fe6f:1f3a on Windows returns the stupid
message that the address must be in the a.b.c.d format.  I then tried using
nbtlookup from linux:

nmblookup -S -U '[fe80::216:3eff:fe6f:1f3a]' \*
10.1.1.232 *<00>
Looking up status of 10.1.1.232
        DEVSERV2        <00> -         B <ACTIVE>


Why is it reporting the IPv4 address when I queried it with the IPv6 address? 
It looks like nmbd is listening on IPv6, but does not or is not able to report
an IPv6 address.



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On 4/11/2017 9:24 AM, David Holder wrote:
> Hi Phil,
> 
> NBT name resolution is IPv4 only. Samba does work over IPv6, but
> NetBIOS name resolution is and always will be IPv4 only. It is a
> feature of the protocol not Samba.
How can this be?  Everything I have read about SMB for the last 20 years
or so has said that it is based entirely on NetBIOS, and has no concept
even of IPv4; that it is NBT that translates NetBIOS to run over IPv4.

The slide show indicates that you have to use DNS for name resolution.
Does that mean that if you have a DNS AAAA record, then it will use
IPv6?  What about mDNS?  For that matter, why don't Windows workstations
appear to register their link local addresses with the Windows' Sever
dynamic dns foo.local domain?