I have upgraded my Windows Server 2008 R2 to a new Windows Server 2012 R2 and installed AD DS, but when to trying to join other PCs to the domain it gives the following error:
The specified domain does not exist or could not be contacted.
Domain name is [Name.local]
After much troubleshooting, I figured out that I have to set static dns configuration in the client settings to point to the server IP. I already had set that in IPv4 from my experience with 2008 R2, but it worked only when I set the IPv6 too. Some clients needed to 'flush dns cache' or restart the machine before being able to join the domain.
My DHCP has a feature to distribute IPv6, but I am not familiar with this configuration.
My IPv4 configuration is as the following:
2012 R2 server: 192.168.1.2
Start IP address: 192.168.1.100
End IP address: 192.168.1.200
Lease Duration: 1 minute
Primary DNS server address: 192.168.1.1
Secondary DNS server address: 192.168.1.2
from 192.168.1.10 to 192.168.1.100 and,
from 192.168.1.200 to 192.168.1.254
same Primary & Secondary DNS Server
The available DHCP configuration for IPv6:
(these are the available manual fields)
Prefix length: [16 - 64]
Preferred lifetime: [60 - 4294967295 S]
Valid lifetime: [60 - 4294967295 S]
Primary DNS server address:
Secondary DNS server address:
What DHCPv6 setting can work with the DHCPv4 setting to point the machines' DNS to the 2012 R2?
And what does the IPv6 of the 2012 R2 Server should be? and how configure it whether over GUI or CLI?
[update] The workaround of configuring IPv6 DNS has been working fine for a month, but now it stopped working, any idea how to troubleshoot this issue?