Bug 3674 - Samba is always sending empty browse lists as WINS server and browser
Samba is always sending empty browse lists as WINS server and browser
Status: NEW
Product: Samba 3.0
Classification: Unclassified
Component: nmbd
3.0.22
x86 Windows XP
: P3 normal
: none
Assigned To: Samba Bugzilla Account
Samba QA Contact
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Depends on:
Blocks:
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Reported: 2006-04-11 17:14 UTC by Niki Hammler
Modified: 2006-04-11 17:14 UTC (History)
1 user (show)

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Description Niki Hammler 2006-04-11 17:14:13 UTC
I'm very sure this is a bug because nobody could help me (even not on the samba mailing list) and configuration is 100% correct.

Problem: Neither WINS nore NetBIOS do browsing. Network neighbourhood on Windows XP stays empty and lots of tools I will describe later also reports empty browse lists.

I only have a test environment with the samba server (3.0.22 - newest version) and a vanilly WindowsXP professional.
First, I used the deb-packages from www.samba.org but for locating the error I built a new vanilla samba from source and installed it to /samba.

First, I also had the XP computer in a domain (as PDC) but now I noticed, that it has nothing to do with PDC. As soon as samba is local/master browser, the network neighbourhood is empty.

When I turn off browsing on samba server (os level=0, preferred master=no, domain master=no, local master=no) everything works OK.

The smb.conf looks like (only global section):
[global]
        panic action = /usr/share/samba/panic-action %d
        interfaces = 192.168.200.121/255.255.255.0
        socket options = TCP_NODELAY IPTOS_THROUGHPUT SO_KEEPALIVE SO_SNDBUF=18384 SO_RCVBUF=16384

        netbios name = nobaq
        workgroup = HAMMLER
        server string = Samba server
        passdb backend = tdbsam

        os level = 128
        preferred master = no yes
        domain master = yes
        local master = yes

        security = user
        encrypt passwords = true
        domain logons = yes
        logon path = \\%L\profile
        logon drive = U:
        logon home = \\%N\%U
        logon script = logon.cmd

        map to guest = never
        guest account = nobody
        map to guest = Bad User
        ;username map = /etc/samba/users.map
        unix password sync = yes
        passwd program = /usr/bin/passwd %u
        passwd chat = Enter*new*UNIX*password: %n\n \nRetype*new*UNIX*password: %n\n \npasswd:*password*updated*successfully*

        time server = yes
        wins support = yes
        ;dns proxy = yes
        name resolve order = lmhosts wins bcast host

        printing = cups
        printcap name = cups
        load printers = yes

        preserve case = yes
        dos charset = CP850
        create mask = 600
        directory mask = 700
        short preserve case = yes
        unix charset = ISO8859-1

        add machine script = /usr/bin/sudo /etc/samba/scripts/machineadd.sh %u
        add group script = /etc/samba/scripts/groupadd.sh "%g"
        delete group script = /usr/sbin/groupdel "%g"
        add user to group script = /usr/sbin/adduser "%u" "%g"
        delete user from group script = /usr/sbin/deluser "%u" "%g"
        delete user script = /usr/sbin/deluser --remove-home "%u"

        log level = 99
        ; log file = /var/log/samba/smb%m.log
        log file = /var/log/samba/SMB.log
        max log size = 50000

Contents of wins.dat:

VERSION 1 0
"HAMMLER#00" 1145050326 255.255.255.255 e4R
"HAMMLER#1b" 1145049185 192.168.200.121 64R
"HAMMLER#1c" 1145049185 192.168.200.121 e4R
"HAMMLER#1e" 1145050326 255.255.255.255 e4R
"NOBAQ#00" 1145050326 192.168.200.121 66R
"NOBAQ#03" 1145050326 192.168.200.121 66R
"NOBAQ#20" 1145050326 192.168.200.121 66R
"STYLISTIC#00" 1145090244 192.168.200.201 64R
"STYLISTIC#20" 1145090245 192.168.200.201 64R


Contents of browse.dat:

"HAMMLER"                 c0001000 "STYLISTIC"                   "HAMMLER"
"NOBAQ"                   40099b2b "NOBAQ Server"                "HAMMLER"
"STYLISTIC"               40051003 "NikiMobile"                  "HAMMLER"

smbclient on the same machine:
root@nobaq:~ # smbclient -L //NOBAQ -U %
Domain=[HAMMLER] OS=[Unix] Server=[Samba 3.0.22]

        Sharename       Type      Comment
        ---------       ----      -------
        webspace        Disk      Eigene Webdateien
        web-publish     Printer   PDF auf Homepage veroeffentlichen
        cdrom           Disk      CD-Rom
        zip             Disk      ZIP-Drive
        daten           Disk      Daten
        donkey          Disk      MLdonkey
        pub             Disk      Oeffentlicher Datenaustausch
        media           Disk      MEDIA
        IPC$            IPC       IPC Service (NOBAQ Server)
        ADMIN$          IPC       IPC Service (NOBAQ Server)
Domain=[HAMMLER] OS=[Unix] Server=[Samba 3.0.22]

        Server               Comment
        ---------            -------

        Workgroup            Master
        ---------            -------

also doesn't list any servers or workgroups although it should!


Windows XP is configured to use the SAMBA wins.
Again: There are only two computers left in the network, I tried with/without domain, many options etc.

At the point of writing, the WindowsXP computer is not member of the domain but both are in the workgroup 'HAMMLER'.
But I get the same results when the XP computer is domain member.

net view on the windows machine:
C:\>net view
Es sind keine Einträge in der Liste.


browstat on windows machine:
C:\>browstat status


Status for domain HAMMLER on transport \Device\NetBT_Tcpip_{CFE1851D-F469-482D-8
682-2137FEF1FF3E}
    Browsing is active on domain.
    Master browser name is: NOBAQ
        Unable to determine build of browser master: 2
    \\\\NOBAQ         .  Version:04.09  Flags: 9a2b NT CONTROLLER SERVER
    1 backup servers retrieved from master NOBAQ
        \\NOBAQ
    There are 0 servers in domain HAMMLER on transport \Device\NetBT_Tcpip_{CFE1
851D-F469-482D-8682-2137FEF1FF3E}
    There are 0 domains in domain HAMMLER on transport \Device\NetBT_Tcpip_{CFE1
851D-F469-482D-8682-2137FEF1FF3E}

As you can see, 0 servers and 0 domains


C:\>browstat VIEW \Device\NetBT_Tcpip_{CFE1851D-F469-482D-8682-2137FEF1FF3E}
Remoting NetServerEnum to \\NOBAQ on transport \Device\NetBT_Tcpip_{CFE1851D-F46
9-482D-8682-2137FEF1FF3E} with flags ffffffff
0 entries returned.  0 total. 10 milliseconds


And all nbtstat output on the windows machine (nobaq is the samba server, 192.168.200.121 is the IP of the samba server)


C:\>nbtstat -a nobaq

LAN-Verbindung:
Knoten-IP-Adresse: [192.168.200.201] Bereichskennung: []

      NetBIOS-Namentabelle des Remotecomputers

       Name               Typ          Status
    ---------------------------------------------
    NOBAQ          <00>  EINDEUTIG   Registriert
    NOBAQ          <03>  EINDEUTIG   Registriert
    NOBAQ          <20>  EINDEUTIG   Registriert
    ..__MSBROWSE__.<01>  GRUPPE      Registriert
    HAMMLER        <00>  GRUPPE      Registriert
    HAMMLER        <1B>  EINDEUTIG   Registriert
    HAMMLER        <1C>  GRUPPE      Registriert
    HAMMLER        <1D>  EINDEUTIG   Registriert
    HAMMLER        <1E>  GRUPPE      Registriert

    MAC Adresse = 00-00-00-00-00-00

C:\>nbtstat -A 192.168.200.121

LAN-Verbindung:
Knoten-IP-Adresse: [192.168.200.201] Bereichskennung: []

      NetBIOS-Namentabelle des Remotecomputers

       Name               Typ          Status
    ---------------------------------------------
    NOBAQ          <00>  EINDEUTIG   Registriert
    NOBAQ          <03>  EINDEUTIG   Registriert
    NOBAQ          <20>  EINDEUTIG   Registriert
    ..__MSBROWSE__.<01>  GRUPPE      Registriert
    HAMMLER        <00>  GRUPPE      Registriert
    HAMMLER        <1B>  EINDEUTIG   Registriert
    HAMMLER        <1C>  GRUPPE      Registriert
    HAMMLER        <1D>  EINDEUTIG   Registriert
    HAMMLER        <1E>  GRUPPE      Registriert

    MAC Adresse = 00-00-00-00-00-00


C:\>nbtstat -c

LAN-Verbindung:
Knoten-IP-Adresse: [192.168.200.201] Bereichskennung: []

                  NetBIOS-Remotecache-Namentabelle

        Name              Typ        Hostadresse     Dauer [Sek.]
    -------------------------------------------------------------
    HAMMLER        <1D>  EINDEUTIG       192.168.200.121     375
    HAMMLER        <1B>  EINDEUTIG       192.168.200.121     350
    NOBAQ          <00>  EINDEUTIG       192.168.200.121     545
    NOBAQ          <20>  EINDEUTIG       192.168.200.121     450

C:\>nbtstat -n

LAN-Verbindung:
Knoten-IP-Adresse: [192.168.200.201] Bereichskennung: []

                Lokale NetBIOS-Namentabelle

       Name               Typ          Status
    ---------------------------------------------
    STYLISTIC      <00>  EINDEUTIG   Registriert
    HAMMLER        <00>  GRUPPE      Registriert
    STYLISTIC      <20>  EINDEUTIG   Registriert
    HAMMLER        <1E>  GRUPPE      Registriert


Although I run samba with loglevel of 99 and look *very* carefully through the logs,
I can't see any irregulareness.

Another debugging try was capturing packets with Ethereal. I think the packets I'm interested in
are NetServerEnum2 packets (aren't they?).

There are lots of NetServerEnum2 requests (Domain enum; Workstation, Server, ...) and *every*
NetServerEnum2 response has the attributes "Entry count: 0" and "Available entries: 0".



I do hope that you are able to fix the error as browsing is an important feature of samba.
I'd be very happy to provide you with more information (ethereal dumps, logs, outputs, ...).
E-Mail is included in the bug report.

Best regards,

Nikolaus Hammler