[jcifs] "A duplicate name exists on network" when a host has multiple names

[Andrew Miller]

I have seen the error described in several deployments since upgrading
from 0.7.19 (very old I know) to 1.2.6.  In each case I have either
used a different hostname or used an IP address, but we're about to
begin a wider release and am not looking forward to the support calls
this may trigger.

I am working to reproduce the error in my test environment, but it is
proving a bit difficult given my setup.  If you know what is causing
this and can suggest a fix, I would be grateful.

--Andy

On 10/17/05, Praveen Tammana <a10pkt8 at gmail.com> wrote:
> On 10/17/05, Michael B Allen <mba2000 at ioplex.com> wrote:
>
> > On Mon, 17 Oct 2005 10:45:03 -0700
> > Praveen Tammana <praveen.public at gmail.com> wrote:
> >
> > > On 10/17/05, Michael B Allen < mba2000 at ioplex.com> wrote:
> > > >
> > > > On Mon, 17 Oct 2005 01:32:08 -0700
> > > > Praveen Tammana <praveen.public at gmail.com> wrote:
> > > >
> > > > > Hi,
> > > > >
> > > > > I am working with 1.2.1 and I am getting errors when working with a
> host
> > > > > that has multiple names. (eg: deathstar = zpac23 =
> > > > > 172.25.181.23 <http://172.25.181.23><http://172.25.181.23>).
> > > > > For example, when I run the ListFiles example:
> > > > >
> > > > > java ListFiles smb://deathstar/ ------- works
> > > > > java ListFiles smb://zpac23/ ------- does not
> > > > > java ListFiles smb://172.25.181.23/ ------- works
> > > >
> > > > Where exactly does it fail? What's the exception?
> > >
> > >
> > > Forgot to add the stack trace, sorry 'bout that.
> > >
> > > Exception in thread "main" jcifs.smb.SmbException: A duplicate name
> exists
> > > on the network.
> > > at
> jcifs.smb.SmbTransport.checkStatus(SmbTransport.java:456)
> > > at jcifs.smb.SmbTransport.send (SmbTransport.java:556)
> > > at
> jcifs.smb.SmbSession.sessionSetup(SmbSession.java:263)
> > > at jcifs.smb.SmbSession.send(SmbSession.java:220)
> > > at jcifs.smb.SmbTree.treeConnect(SmbTree.java:137)
> > > at jcifs.smb.SmbFile.connect (SmbFile.java:791)
> > > at jcifs.smb.SmbFile.connect0(SmbFile.java:761)
> > > at jcifs.smb.SmbFile.send(SmbFile.java:660)
> > > at jcifs.smb.SmbFile.doNetEnum(SmbFile.java:1619)
> > > at jcifs.smb.SmbFile.listFiles (SmbFile.java:1568)
> > > at jcifs.smb.SmbFile.listFiles(SmbFile.java:1478)
> > > at ListFiles.main(ListFiles.java:17)
> >
> > This is coming from the server. I don't think there's any way around
> > this. I think other CIFS clients will give you the same error. If you try
> > another client and it does not give you the error using the name zpac23
> > then get a packet capture and we can see how it's avoiding the problem.
>
>  That sounds bad.  I'll try some other clients and see if they work.
>
>  Thanks
>  -Praveen
>
> > Mike
> >
>
>