Register DNS records with connection-specific DNS suffix group policy

This group policy applies only if "DynamicUpdate" group policy is enabled or "DynamicUpdate" group policy is "NotConfigured" and dns client local configuration allows dynamic update.

By default, A DNS client concatenates it's host name with primary dns suffix and performs dynamic DNS registration of A and PTR resource records for the resultant dns client's host name. If this policy enabled, In addition to default A and PTR dynamic dns registration, the DNS client concatenates it's host name with connection specific dns suffix and performs dynamic DNS registration of A and PTR resource records for the resultant dns client's host name.
Note:This policy supersede the connection-specific DNS suffixes set on the hosts configured locally and those configured using DHCP. The following diagram depicts local configuration connection specific dns suffixes.
This policy will be applied on all the network connections of multihomed hosts.

If DynamicUpdate is disabled on a specific network connection on a host, Then this policy settings doesn't apply on that specific network connection. However, policy settings will apply on other network connections.

If this policy is disabled, a DNS client will not register A and PTR resource records with its connection-specific DNS suffix.

If this policy is not configured, then it is not applied to any hosts and hosts use their local configuration as shown below.

See the option "Use this connection's DNS suffix in DNS registration" checked.
To enable this policy, follow the instuctions at Enable register dns connection specific suffix