@m4zuper I have that setting set correctly, but when using the phone (android used as proxy) normally, it also shows webrtc mismatch, but my iphone doesn't, so maybe just a normal thing, and not to do with bas?
For those who needs this later, you can set up http proxy and send a simple get request to https://api.ipify.org , it will give you the ip adress in plain text, no need to parse the json.
One of many simple and easy ways to do it.