• ADC version 13.0.86.17, with 'Citrix Secure Access' VPN client the same version, shows as version 22.2.1.103 in the client.
• The old client was 13.0.58.30 shown as 21.3.1.2 1.
• Some users report that on the new client they cannot resolve any DNS record. 

With the latest VPN plugin present the older DNS behavior is restored and the DNS/WINS server addresses would be 172.0.0.1 for any Intranet IP subnet i.e. 172.16.177.28/255.255.255.0 rather than having 172.16.177.1 as DNS/WINS server IP addresses.

EnableADCNetmask is the registry key that will revert the behavior again to use new DNS/WINS server IP addresses.

On the affected plugin, you can create the following registry and that should resolve the issue –

• Registry Type     : REG_DWORD

• Registry Name   : DisableADCNetmask

• Registry Value   : 1

• Registry Path      : HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\Secure Access Client

Problem Cause