I did try a ping test like you've suggested. I pinged the bulb in question and a physical neighboring bulb. The bad bulb would show the DHCP issue at the same time as a ping failure in most cases....

@Tony Thanks, but you need to be a bit more specific. If you mean pinging my external IP that's not going to happen. I have it disabled on my router. The router is working very well, and no other...

What is up with this LB120? It's having major problems with DCHP. I've reserved the address in my router for it and all TP-Link devices in my network. But it keeps asking for an IP. For example -...