I have a Cisco IOS router which is also configured as the DNS server with the command "ip dns server"
The DHCP scope is also configured in the router & it is also configured to give DNS server details to the client & the IP address of the DNS server is the router.
Since the router is configured as the DNS server, is it possible to restrict its DNS server functionality for a particular VLAN or segment .
Lets say only VLAN 100 (192.168.100.0/24) the router should act as DNS server.
If any other segment if it tries to use the router IP address as DNS server, it should not work.