I've posted this problem on Sling Community and have gotten no help, and called Slingbox support have gotten no help either.

I have a Slingbox in my family room conntect to my router via powerline ethernet, as well as a separate slingbox connected directly to my router in another room.

Within my network at home, I can see / view both my Slingboxes just fine.

Outside of my home network, I can only see my slingbox that is connected directly to the router, and not the one connected via powerline.

I used to be able to see the slingbox connected via powerline at first a year ago, but sometime during the last year there was a firmware update for both slingboxes, and now I can only see the directly connected slingbox.

Any ideas on what may be wrong and what I could do to troubleshoot this?