Linux demo no longer working

I started using the linux demo at the beginning of this month, it used to work just fine. However, yesterday it can only list the bulbs, but cannot change brightness nor toggle it on and off. I always get “Connection timed out”. But it can detect when I enable/disable developer mode on any of the bulbs (list command updated with developer mode enabled bulbs). I believe it still listens because when I curl at some random ports I immediately get “Connection refused”, but when I curl port 55443 then it will take a long time before finally “Connection timed out”.

try “telnet 55443” and typing some command to see if it responds.

OK, telnet works:

telnet 55443
Connected to
Escape character is '^]'.
{"id":(null), "error":{"code":-1, "message":"invalid command"}}

Next step?

That means the local mode is working fine, double check your machine that is running the demo, make sure it can access the bulb (ping to verify).

Aha! Have to turn it off then on again (physically). Now everything works again.