It’s also similar with mDNS on local networks. It’s actually nice!

Overall, DNS features are not always well implemented on most software stack.

A basic example is the fact that DNS resolution actually returns a list of IPs, and the client should be trying them sequentially or in parallel, so that one can be down without impact and annoying TTL propagation issues. Yet, many languages have a std lib giving you back a single IP, or a http client assuming only one, the first.