On Fri, Apr 02, 2021 at 04:15:07PM -0400, rhkra...@gmail.com wrote: > Sort of building on this question, and just trying to educate myself, if the > DSL modem had a caching nameserver: > > 1) would your computer need to specify the IP of that modem (presumably) > 192.168.1.254 to take advantage of the caching?
Regardless of whether the router's nameserver is forward-only or caching, you would still need to put its IP address in the resolv.conf file of each client that intends to use it. Normally this is done by advertising it via DHCP. > 2) would the caching feature be bypassed if your computer used the public > DNS name servers (e.g., 8.8.8.8, 8.8.4.4, and 1.1.1.1)? (Or if they were > listed before the modem IP address?) You would be using the cached results stored by those external nameservers. Those are *extremely* popular nameservers, so one may assume they will have basically the entire Internet namespace cached most of the time.
