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FAQ 24: Unable to specify single DNS server on Linksys hardwareCategory: Troubleshooting
Although Linksys devices will allow you to specify an internal IP for the DNS server,
the unit may give out additional DNS servers to LAN clients via DHCP.
DNS Redirector must be the sole DNS server used by clients.
The Linksys device is attempting to be helpful by providing additional DNS servers for redundancy.
The other DNS servers are being populated from the WAN/Internet interface, which usually indicates an ISP connection with a dynamic IP.
Method 1: Specify the IP you have in ListenOnIP= for all 3 DNS Server IP fields on the Linksys admin page, leaving none of them with 0.0.0.0 or blank.
Method 2: Give the machine running DNS Redirector 3 IP addresses, for example 192.168.0.2, ...0.3, and ...0.4,
leave ListenOnIP= set blank which will cause DNS Redirector to listen for DNS queries on every system IP address,
then specify 192.168.0.2, ...0.3, and ...0.4 in the DNS Server IP fields on the Linksys admin page.
Method 3: Disable or turn off DHCP service in the Linksys device and use
Microsoft's DHCP service available on any server OS.
Method 4: Use an alternative firmware on the Linksys device such as Tomato or
Method 5: Use a different firewall/router.
FAQ 28 Providing multiple DNS servers to clients
FAQ 35 Known incompatible devices