While DNS realy is enabled:
1) Does the router cache DNS information?
2) Where is the DNS server address obtained from?
From the DIR-655 help page:
DNS Relay
When DNS Relay is enabled, the router plays the role of a DNS server. DNS requests sent to the router are forwarded to the ISP's DNS server. This provides a constant DNS address that LAN computers can use, even when the router obtains a different DNS server address from the ISP upon re-establishing the WAN connection. You should disable DNS relay if you implement a LAN-side DNS server as a virtual server.
This makes sense to me until the statement that reads:
...even when the router obtains a different DNS server address from the ISP upon re-establishing the WAN connection.
Can someone explain what the quote above means?
Thanks!