I installed HAOS on an Intel NUC which is connected via ethernet to my network. I can access HA on all computers on the network via IP but not via http://homeassistant.local:8123. I am fine with this, but I want to make sure this is not going to be an issue for other things going forward.
I have no clue why I cannot access HA via the aforementioned address, but don’t care if it’s not going to cause later issues.
You might be blocking MDNS somewhere in your network, it won’t be a problem. If you really want to use it that way you can always add an entry to your hosts file locally (Linux, Mac, Windows) and it will always work.
The only place it might bite you is on any “add integration” button on some GIT pages and in the HA docs, as it will rely on the MDNS working but it’s still not a problem.
That’s a great point I didn’t consider as well. Maybe you can’t reach it because you changed it from “homeassistant” to something else. I know I do this for my various HA instances (“rvassistant”, “boatassistant”, “hadev”, etc).