samba - Apr 2015 - domain authentication issue after rebooting the linux VM

Hi Team,

We are using samba-winbind on OEL 6.5_x64 for adding that VM server to our
window domain & for domain account authentication.
All the things are working fine on configuring the service & even domain
authentication is working fine. Issue is that if OEL server get
rebooted/restarted then we see domain account authentication is not working, I
see status of winbind service which says its running & also 'net ads
testjoin' command is OK after rebooting the server, just domain
authentication is not working. And when I restart the windind service then
authentication will work, so every time we need to restart the winbind service
after rebooting on server, why domain authentication is not working on reboot of
server.??

samba-winbind-clients Details:

Name        : samba-winbind-clients        Relocations: (not relocatable)
Version     : 3.6.23                            Vendor: Oracle America
Release     : 14.0.1.el6_6                  Build Date: Mon 23 Feb 2015 11:00:38
AM CST
Install Date: Tue 24 Feb 2015 06:42:34 AM CST      Build Host:
ca-build44.us.oracle.com
Group       : Applications/System           Source RPM:
samba-3.6.23-14.0.1.el6_6.src.rpm
Size        : 6751908                          License: GPLv3+ and LGPLv3+
Signature   : RSA/8, Mon 23 Feb 2015 11:02:04 AM CST, Key ID 72f97b74ec551f03


Regards,
Vishal