Different public address
This may be a VPN bypass, split tunneling or another gateway. Compare it with the route your VPN is expected to use.
Free network tool
WebRTC leak test
Check whether your browser reveals another public address through WebRTC, especially while using a VPN.
Your result
Checking
Checking WebRTC addresses…
Gathering connection candidates and comparing them with your web request.
Web request IPChecking…
Public candidatesChecking…
Local candidatesChecking…
This test contacts Google’s public STUN service (stun.l.google.com:19302). Candidate addresses are inspected locally and are not uploaded to Localtonet.
Understand an address mismatch
WebRTC helps browsers make direct connections for calls and data transfers. During connection discovery it can expose candidate IP addresses, which may use a different network route from an ordinary website request.
Connect to your VPN before running the test, then compare any different public address with the route your VPN should use. Only addresses from the same IP family are compared: IPv4 and IPv6 can both be normal on one connection. Use the DNS leak test to inspect DNS resolver paths separately.
Local address visible
A private address exposes local network information. It does not by itself show that traffic bypassed a VPN.
No public candidate
Browser privacy controls, blocked STUN traffic or network policy may hide candidates. The result is inconclusive.
What to do next
Review your VPN’s WebRTC controls and browser privacy settings, then check again after making a change.
View candidate addresses and connection details
Run the test to see its detected details.
Common questions
Does no mismatch mean my VPN is fully protected?
No. This is a single browser observation, and candidate gathering can be blocked or limited.
What is an mDNS candidate?
Browsers can replace a local address with a temporary .local hostname. This helps hide the raw local address from page scripts.
Does the test use my camera or microphone?
No. It creates a data channel to gather connection candidates and does not request media access.
Are the candidate addresses saved?
This tool keeps them in the page. It does not upload the candidate list or the complete session description to Localtonet.
