The Superhub 3 with firmware 9.1.116V gets very confused with port ranges on port forwarding. This is my original set-up which works fine:
Notice how I've got two rules for ports 80 and 81 - probably because I added port 80 first and port 81 later. Today, I did some jiggling around so ended up deleting all three rules and starting again. This time, I decided to use a single rule for ports 80-81 so set-up this rule:
However, when I tried to add the final 8008 rule, I couldn't save the rule because it said "invalid range of ports":
I even did a factory reset to see if it had confused. Totally repeatable. Once you have that 80-81 port range in there, you can't add that third rule. Had to go back to the original three rule set-up.
I have to admit I'm not sure what's going on here, I've not experienced this specific fault before. I'm going to try and replicate this and see what results I get. I'll get back to you in a few days with some more info.
Sorry for this,
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