I have had Home Assistant working fine for a few months now. Just recently, I found that the web UI was inaccessible. The observer URL at port 4357 works and says everything is good.
I have also noted that an add-on I have that hosts a web UI works. I don’t think it’s a firewall issue as if I access the terminal directly, I can ping localhost:8123, but trying to curl tells me it failed to connect after 1ms. I have also verified it can access the internet by pinging google.
I also found I couldn’t SSH into it, but that maybe be unrelated and just my software.
Can anyone help me figure out what happened and fix it?