NetApp CIFS (DHSS = True) driver fail configuring CIFS server if AD is in different subnet

Share Server creation fail in a situation when NetApp backend controller and CIFS AD server are in two different subnets.

Here is the error from m-shr log -

2017-06-16 02:22:26.859 474262 DEBUG manila.share.drivers.netapp.dataontap.client.api [req-5dc68229-c4fc-48b1-aa59-65cf17af9a5c 580ad5d9dd1c4047aac4f210b1e85371 503d42ac680b431c89c3b50ccbb3106c - - -] Response: <results xmlns="http://www.netapp.com/filer/admin" status="passed"/>
 invoke_elem /usr/lib/python2.7/site-packages/manila/share/drivers/netapp/dataontap/client/api.py:248
2017-06-16 02:22:26.860 474262 DEBUG manila.share.drivers.netapp.utils [req-5dc68229-c4fc-48b1-aa59-65cf17af9a5c 580ad5d9dd1c4047aac4f210b1e85371 503d42ac680b431c89c3b50ccbb3106c - - -] Leaving method configure_dns trace_wrapper /usr/lib/python2.7/site-packages/manila/share/drivers/netapp/utils.py:88
2017-06-16 02:22:26.862 474262 DEBUG manila.share.drivers.netapp.dataontap.client.client_cmode [req-5dc68229-c4fc-48b1-aa59-65cf17af9a5c 580ad5d9dd1c4047aac4f210b1e85371 503d42ac680b431c89c3b50ccbb3106c - - -] Trying to setup CIFS server with data: {'admin-username': u'XXXXX', 'force-account-overwrite': 'true', 'domain': u'cifs.netapp.com', 'cifs-server': 'XXXXXX', 'admin-password': u'XXXX'} configure_active_directory /usr/lib/python2.7/site-packages/manila/share/drivers/netapp/dataontap/client/client_cmode.py:1158
2017-06-16 02:22:26.863 474262 DEBUG manila.share.drivers.netapp.dataontap.client.api [req-5dc68229-c4fc-48b1-aa59-65cf17af9a5c 580ad5d9dd1c4047aac4f210b1e85371 503d42ac680b431c89c3b50ccbb3106c - - -] Request: <netapp xmlns="http://www.netapp.com/filer/admin" version="1.110" vfiler="os_de67de12-112a-4fe0-b2c6-1bd6b7f8223c">
  <cifs-server-create>
    <admin-username>XXXXXXX</admin-username>
    <force-account-overwrite>true</force-account-overwrite>
    <domain>cifs.netapp.com</domain>
    <cifs-server>XXXXXX</cifs-server>
    <admin-password>XXXXXXXX</admin-password>
  </cifs-server-create>
</netapp>
 invoke_elem /usr/lib/python2.7/site-packages/manila/share/drivers/netapp/dataontap/client/api.py:227
2017-06-16 02:22:31.941 474262 DEBUG manila.share.drivers.netapp.dataontap.client.api [req-5dc68229-c4fc-48b1-aa59-65cf17af9a5c 580ad5d9dd1c4047aac4f210b1e85371 503d42ac680b431c89c3b50ccbb3106c - - -] Response: <results xmlns="http://www.netapp.com/filer/admin" reason="Failed to create the Active Directory machine account &quot;OS_DE67..F8223C&quot;. Reason: SecD Error: no server available Details: Error: Machine account creation procedure failed [ 0 ms] Trying to re-use machine account 'XXXXX' in domain 'CIFS.NETAPP.COM' for Vserver 'os_de67de12-112a-4fe0-b2c6-1bd6b7f8223c' [ 3] Failed to connect to 10.63.XXX.XXX for DNS via Source Address 0.0.0.0: Network is unreachable **[ 9] FAILURE: Unable to contact DNS to discover domain ** controllers. [ 9] Unable to connect to any (0) domain controllers. [ 9] 'NisDomain' configuration not available [ 9] NIS configuration not found for Vserver 143 [ 14] Failed to connect to 10.63.XXX.XXX for DNS via Source Address 0.0.0.0: Network is unreachable [ 14] Unable to contact DNS to discover domain controllers. [ 19] Failed to connect to 10.63.XXX.XXX for DNS via Source Address 0.0.0.0: Network is unreachable [ 19] Unable to contact DNS to discover domain controllers. [ 23] Failed to connect to 10.63.XXX.XXX for DNS via Source Address 0.0.0.0: Network is unreachable [ 23] Unable to contact DNS to discover domain controllers. [ 23] No servers available for MS_LDAP_AD, vserver: 143, domain: CIFS.NETAPP.COM. [ 23] Failed to find a domain controller . " status="failed" errno="13001"/>
 invoke_elem /usr/lib/python2.7/site-packages/manila/share/drivers/netapp/dataontap/client/api.py:248
2017-06-16 02:22:31.947 474262 ERROR manila.share.drivers.netapp.dataontap.cluster_mode.lib_multi_svm [req-5dc68229-c4fc-48b1-aa59-65cf17af9a5c 580ad5d9dd1c4047aac4f210b1e85371 503d42ac680b431c89c3b50ccbb3106c - - -] Failed to configure Vserver.