The RegisterAllProvidersIP property causes the network name to register all dependent IP addresses whether they are online ...

The RegisterAllProvidersIP property causes the network name to register all dependent IP addresses whether they are online or offline. Some DNS servers and clients in multi-subnet (multi-site) environments can identify the IP address that is in their subnet and attempt connections only to that address. In such environments, it is usually best to set RegistrerAllProvidersIP to 1. This reduces DNS replication delays.