If IP addresses are automatically allocated from the BAS address pool, the DNS server can be configured in both the domain view and the address pool view, but the configuration in the domain view takes precedence.
The IP address of the DNS server for user access can be delivered by the RADIUS server, configured in the AAA domain view, or configured in the address pool view. The DNS server address configured in the AAA domain view has a higher priority than that configured in the address pool view but has a lower priority than that delivered by the RADIUS server.