nmbd & netbios name -> many addreses
Luke Kenneth Casson Leighton
lkcl at switchboard.net
Thu Mar 11 18:59:59 GMT 1999
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
> 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 18.104.22.168 22.214.171.124 44R
> "KUDOS#03" 921670223 126.96.36.199 188.8.131.52 44R
> "KUDOS#20" 921670223 184.108.40.206 220.127.116.11 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.
> > > >
> > 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>
Luke Kenneth Casson Leighton | Direct Dial : (678) 443-6183
Systems Engineer / ISS XForce Team | ISS Front Desk: (678) 443-6000
Internet Security Systems, Inc. | ISS Fax : (678) 443-6477
http://www.iss.net/ *Adaptive Network Security for the Enterprise*
ISS Connect - International User Conference - May '99
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