[Samba] Winbind doesn't reconnect to DC after disconnect

[mtsai]

If either the domain member or the domain controller causes the 
connection to break, winbind doesn't reconnect to the controller 
afterwards so authentication doesn't work properly.

For more information, what I basically get is the following:

- Connect to the domain controller --> everything works fine.
- either reboot the domain member or domain controller
- when whichever comes back up, the connection is broken and 
authentication doesn't work

Also, after rebooting, wbinfo -t results in the following:

checking the trust secret via RPC calls failed
error code was NT_STATUS_INVALID_COMPUTER_NAME (0xc0000122)
Could not check secret

Also, while the domain controller is down, I do get an error code 
telling me that the domain controller is not there instead of
invalid computer name.

Restarting the winbind daemon fixes it all. Is there a way for winbind 
to automatically notice the disconnect and then reattempt to connect 
when say.. the client finds the domain controller again?

Thanks,
Margaret