[Dnsmasq-discuss] CNAME responses are not processed through address=/ ... / filter

[Dominik Derigs]

Hey Alex,

On Thu, 2021-11-25 at 11:05 -0600, Alex Rainchik wrote:
> Not sure if it’s a bug or feature request :)

The latter. The observed behavior is expected.

Note that dnsmasq is a DNS *forwarder* equipped with a local
cache. It is not a *recursive* server. Dnsmasq has to forward
queries where no local answers exist to upstream DNS servers and
relies on external recursion.

On Thu, 2021-11-25 at 11:05 -0600, Alex Rainchik wrote:
> Expected behavior would be for setup.icloud.com query to get
> "10.10.10.10" response, same as for setup.fe.apple-dns.net.
> Because setup.icloud.com is a CNAME pointing to setup.fe.apple-
> dns.net

As Geert already mentioned, dnsmasq is neither meant nor designed
to post-process replies from upstream DNS server.

Best,
Dominik