you can send morse 10m through a concrete wall using only a computer and ethtool: https://www.youtube.com/watch?v=ueC4SLPrtNg
(yes i know you can do other stuff to an rpi to generate RF, but this only requires a wired ethernet interface)
@selea sounds like a new security issue to test switches for!
@selea what brand?
Mikrotik :)
@sneak
I powercycled them - No difference.
I took away the power for 5 minutes and now they work again