wow!
I had problem with BigBlueButton. Fixed completely!

Super !

Nice

This addon is GREAT! It's the first one, out of several I've tested that, according to browserleaks.com/webrtc, actually works! Local, Public and IPv6 IP Addresses are all listed as, (n/a)! Give this addon a go! (Recommended by someone who cares about online privacy!)

Works like a charm according to https://browserleaks.com/webrtc

Ok

a very good extension on webrtc protection for firefox up until now.
it should be one of those "must have extensions" for firefox.
many thanks to developer for this extension.

Installed it when I realized my VPN did indeed leak my IP. Instant fix with this extension. Thanks, that's very good work. :)