qbittorent 3.1.4 network interface

[bobinmk]

In qbittorent 3.1.4 (win 7 sp1) --> advanced --> network interface which is right for i have the provider isatap will it be safer or teredo ? isatap has my provider name. secured interface i didn't find this on prior versions. think ut. uses teredo.

[loki]

I think teredo is for IPv6 only, you most likely don't want or need that. I think it should also be said that should only need to change this if the default doesn't work for some reason.
Same for isatap, it's for IPv6 in the same manner as teredo. Either way I don't think either are going to give you what you're looking for (safer), if anything they will probably both reduce your performance and/or download and upload speed or capability.