What is bogon doing in my sidebar and how to get rid of it?

Out of the blue today in Finder's sidebar, in SHARED, just under the Time Capsule a new item popped up:

"All..."

Selecting "All..." in sidebar shows in Finder's right panel as follows:

under Name - bogon

under Kind - Neighborhood

Restarting Mac, restarting Time Capsule, disconnecting and reconnecting cable modem - nothing helps, I can't get rid of it and I have no idea what it is...

Just booted my MBP and wife's MB - same thing in both...

It indicates that it is Time Capsule showing the "All..." bogon Neighborhood, not an individual Mac.


Have I been hacked? How to get rid of it, there is no eject next to it?