User`s manual

Multi-WAN VPN QoS Router
71
Therefore, DCHP DNS IP address must be 10.10.10.1 to make DNS local database in effect.
(3) After enabling DNS local database, if there is no host domain names in the list, the router will
still use ISP DNS server or internal DNS server for lookup.
Test if DNS local database is effective:
Assumed tw.yahoo.com IP address is 10.10.10.199, as the following figure.
(1) System Tool => Diagnostic => DNS Name Lookup