samba - Sep 2004 - Trouble while join domain from Windows 2k/SP3 looking for SRV records

Hello, 

i have trouble when I'm trying to join a 2ktest SP 3 box into a samba
3 domain.

[2. samba 3 configuration --- application/octet-stream; smb.conf]...

The 2ktest (it's the name of the box) have 192.168.100.206 as IP
Address, the samba 3 have 192.168.100.18.

Here the tcpdump output when i try to join the domain :

FMSTST is the workgroup name defined in smb.conf 

16:53:17.829963 192.168.100.206.1054 > 192.168.100.18.domain:  18+ SRV?
_ldap._tcp.dc._msdcs.FMSTST. (45)
[...]

Windows complains about it can't find the name FMSTST

so, i set up a bind with some entries (especially one SRV record)


domain.tld.             600     IN      A       192.168.1.5
domain.tld.             600     IN      A       192.168.1.1
domain.tld.             3600    IN      NS      srv-18.domain.tld.
domain.tld.             3600    IN      MX      9 srv-19.domain.tld.

srv-18                  IN      A       192.168.100.18
pdc-fmstst              IN      A       192.168.100.18
2ktest                  IN      A       192.168.100.206
_ldap._tcp.dc._msdcs    IN      SRV     10 10 389 srv-18.domain.tld.
[...]


now, i try to join the domain domain.tld, then i have the following
tcpdump output :

16:58:50.413893 192.168.100.206.1057 > 192.168.100.18.domain:  20+ SRV?
_ldap._tcp.dc._msdcs.fimasys.fr. (49)
16:58:50.414409 192.168.100.18.domain > 192.168.100.206.1057:  20* 1/2/1
(151) (DF)
16:58:50.420354 192.168.100.206.1058 > 192.168.100.18.ldap:  udp 122
16:58:50.420413 192.168.100.18 > 192.168.100.206: icmp: 192.168.100.18 udp
port ldap unreachable [tos 0xc0]
[..]

Why Windows try to access to LDAP server via *UDP* port ?

I also try with a Windows XP, i have the same error, it try to find
some SRV records.

I don't understand where i'm wrong. I already success to have
samba3/ldap as PDC but with more older Windows as members. Note I
_can_ browser the PDC via its name (PDC-FMSTST) using IE (via
\\pdc-fmstst). I join my samba 3 configuration, but I think the
problem don't comes from samba.


Thanks for your help

-- 
Bruno Bonfils
Fimasys