There are two types of routers consumers get here. Those where you can nearly change everything regarding DHCP and such and those given you by cable companies where you can’t even change the IP address of said router.
The latter usually allows you to disable its IPv4 DHCP sever though but enforce itself as the IPv6 DNS server across your network, which can’t be disabled on your own.
The latter usually allows you to disable its IPv4 DHCP sever though but enforce itself as the IPv6 DNS server across your network, which can’t be disabled on your own.