Not every VPN provider handles IPv6 the same way, and understanding the three common provider designs — covered from the leak-diagnosis angle in VPN IPv6 Leaks and Split Network Paths — helps set the right expectations before you even run a test.
Providers with native IPv6 support
Some VPN providers have built full IPv6 tunneling into their client, protecting both address families consistently. This is increasingly common among established, actively maintained services, though it's not universal — worth checking a specific provider's documentation rather than assuming.
Providers that deliberately block IPv6
Rather than building full IPv6 tunnel support, some providers simply disable IPv6 on the client device while connected — a simpler, defensively safe design choice. This produces a "No IPv6 Detected" result on a leak test, which is the expected, non-alarming outcome for this design.
Providers with accidental bypass
Some VPN clients — particularly older ones, or those that haven't been updated to account for IPv6's growing prevalence — simply don't account for it at all, leaving a working IPv6 path unprotected while the client focuses entirely on IPv4. This is the scenario that actually produces a genuine leak.
How to identify which category your provider falls into
Check your provider's documentation for explicit IPv6 handling claims, and confirm directly with NetRiskScan's IPv6 Leak Test — documentation claims and actual observed behavior don't always perfectly align, so direct testing remains the more reliable source of truth.
FAQ
Does provider marketing reliably indicate which design they use?
Not always in enough detail to be certain — testing your own connection directly is more reliable than relying on general marketing claims about "leak protection."