nmbd & netbios name -> many addreses

[Luke Kenneth Casson Leighton]

i remember what VisionFS does.  they sort list by bits-same-as-queryer
from top down.  this makes "closest" ip the first in the list.

On Thu, 11 Mar 1999, Peter Polkinghorne wrote:

> 
> First brief summary of problem:
> 
> Under Samba 1.9.18p10 with a server acting as a WINS server - any Samba 
> servers that register which are multihomed get multiple addresses registered 
> for their netbios names.  This in turn causes Nt 4.0 sp3 clients to receive 
> multiple addresses which they are unhappy about - confirmed with nmblookup -R 
> to the WINS server.  However resolving via DNS (dns proxy = yes) yields only 1 
> address.
> 
> The Samba systems are running under Solaris 2.5.1
> 
> What I have done now is upgrade WINS server nmbd to 2.0.3 and a multihomed 
> server nmbd as well (the smbd remain as 1.9.18p10).  The problem remains - 
> multihomed servers registered via WINS yield multiple addresses to nmblookup 
> and fail on NT 4.0 sp3 clients.
> 
> Here is a sample from the wins.dat file:
> 
> "KUDOS#00" 921670223 134.83.96.20 134.83.16.25 44R
> "KUDOS#03" 921670223 134.83.96.20 134.83.16.25 44R
> "KUDOS#20" 921670223 134.83.96.20 134.83.16.25 44R
> 
> Now what is the solution:
> 
> a) WINS clients (ie kudos in this case) only register 1 address
> 
> b) WINS servers only give out 1 address (perhaps using DNS like approach of 
> giving same subnet as requester if exists)
> 
> c) NT clients accepting multiple address gracefully (the optimistic solution 
> :-))
> 
> The other thing I have not been ale to test is what a multihomed NT box does - 
> we do not have any.
> 
> Finally I am very surprised no one else has encountered this?
> 
> 
> 
> > On Sat, 6 Mar 1999, Peter Polkinghorne wrote:
> > > > That is, that your Samba 1.9.18p10 server is acting as a WINS (NBNS)
> > > > server and as the Domain Master Browser, right?  That rev of Samba 
> > > > doesn't have the Domain Control functionality active, so I assume you're 
> > > > using it as a DMB.
> > > >
> > > Yes - Domain Master Browser - too much of this terminology is getting the 
> > > keywords in the right order :-(.
> > >  
> > > > 
> > > > I don't recall any changes between 1.9.18 and 2.0 that would have fixed
> > > > this, but I often miss these things.  The big change in nmbd (from my
> > > > perspective) was that the namelists were converted from linked lists to
> > > > splay trees, for speed.  Before 1.9.18 I didn't have my hands in, so I
> > > > don't know what might have happened in between. 
> > > >
> [SNIP]
> > uh... actually... that means... ok.  it's a bit complicated to explain in
> > a short email, check against 2.0 and let the list know your findings:
> > there may be a bug here.
> > 
> 
> 
> 

<a href="mailto:lkcl at samba.org"   > Luke Kenneth Casson Leighton  </a>
<a href="http://www.cb1.com/~lkcl"> Samba and Network Development </a>
<a href="http://samba.org"        > Samba Web site                </a>

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