via a piece of javascript, so using NoScript on Firefox negates it. Beware!
http://webwereld.nl/beveiliging/85263-webrtc-verklapt-je-verborgen-ip-adres
Robin Edgar
Organisational Structures | Technology and Science | Military, IT and Lifestyle consultancy | Social, Broadcast & Cross Media | Flying aircraft
robin@edgarbv.com
https://www.edgarbv.com