samba - Dec 2009 - smbclient, meaning of workgroup/master table

Hello list,

I have a little question. When I do smbclient -L //server, what does
the following table mean?


        Workgroup            Master
        ---------            -------
        ADMINISTRACION       ADM003
        AEYT                 AEYT4
        TRABAJO              ESTEEQUIPO
        WORKGROUP            JUKEBOX


I'm asking because I have 5 samba domains and when I do smbclient -L
against the domain servers, I get different information in the table.
For example I get something like the following:

smbclient -L //server1 -U%
        Workgroup            Master
        ---------            -------
       domain1      server1
       domain2      server2
       domain3      server3

smbclient -L //server2 -U%
        Workgroup            Master
        ---------            -------
       domain1      server1
       domain2      someworkstation-in.domain2
       domain3      someworkstation-in-domain3


smbclient -L //server3 -U%
        Workgroup            Master
        ---------            -------
       domain1      server1
       domain2      someworkstation-in-domain2
       domain3      server3


Is this normal?


Thanks,
Norberto