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samba-users: [Samba] Wrong PDC IP from multi-homed samba PDC

[Samba] Wrong PDC IP from multi-homed samba PDC

From: Carl G. Riches <cgr_at_nospam>
Date: Thu May 27 2010 - 23:01:25 GMT
To: samba@lists.samba.org

I am trying to join a SAMBA client to a SAMBA domain. The
SAMBA PDC is on a different network from the SAMBA client.
I have a SAMBA server on the client network acting as a
local browse master. The "net join" command fails because
the PDC is multi-homed, it gives out a list of addresses,
the address at the head of the list can't be reached by
the client and the command does not iterate through the
list of PDCs. Is there a way to specify the order of IP
addresses handed out by the SAMBA server when it is asked
for the PDC address(es)?

The PDC is multi-homed with these addresses:
  10.142.36.94 (a /25 net)
  10.142.36.125 (a /27 net)
  10.142.36.254 (a /25 net)
The client can connect to the PDC's 10.142.36.94 address (ping,
ssh, etc.) via an IPsec tunnel.

I can successfully run many commands against the PDC:
  nmblookup -B server __SAMBA__
  nmblookup -M -- -
  smbclient -L server -U%
and so on.

However, the "net lookup dc" command gives me a list of PDC
addresses in this order:
  10.142.36.254
  10.142.36.94
  10.142.36.125
The file wins.dat has these entries for the PDC:
"SERVER#00" 1275257441 10.142.36.94 10.142.36.254 10.142.36.125 66R
"SERVER#03" 1275257441 10.142.36.94 10.142.36.254 10.142.36.125 66R
"SERVER#20" 1275257441 10.142.36.94 10.142.36.254 10.142.36.125 66R

A "net join" command fails. It tries to use this address for
the PDC:
  10.142.36.254

There is no route to that address. The "net join" command does
not iterate through the list of PDC addresses, though. It just
fails.

Is there a way to specify the order in which the SAMBA PDC hands
out its addresses (when multi-homed) such that the IP address at
the top of the list is the one on which the request arrived? That
is, if a request for the PDC list arrives on the 10.142.36.94
interface can the response put the address 10.142.36.94 at the
head of the list of PDC addresses?

Thanks,
Carl

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