Thanks for using our forums. You have a great question. The Slingbox SOLO does require a static IP to be able to keep the port forwarding settings and stream to the SlingCatcher. Once you set the static IP and reset the Slingbox to get that IP address, you will be able to stay connected to your SlingCatcher.
Hope this helps!
The Sling Moderation Team
Sorry, Katie. I didn't make myself clear. My slingbox does of course have a static IP already, but I was wondering if in fact my router in the UK needed one as well. Anyway I am now happily watching TV through my slingcatcher in France so clearly a static IP address for my router us not necessary!
By the way, why on earth did Sling stop producing the slingcatcher? It is a great piece of kit!
The only IP address that needs to be static is the one you have setup your port forwarding to, i.e.the IP address of the Slingbox. This is because if it wasn't static then your port forwarding rule would become invalid if the IP address of the Slingbox changed.
However, your location/router itself doesn't need a static IP address because what happens is your Slingbox will report your router's IP address (often called your external IP address) to the Sling account server if it changes. Your Slingcatcher then contacts this account server to get the up to date external IP address of your router and thus knows how to reach your router, and then via your port forwarding it can also reach your Slingbox.
Slingcatcher was the best companion to the Slingbox and I agree wholeheartedly that it was a real shame they dropped it. It beats any other Slingplayer they have developed for getting the video on the TV hands down.