So I updated to iOS latest Anyconnect. Which claims now support ipv6. But after some testing, it seems like the iOS app will not tunnel ipv6 traffic when the server doesn&#x27;t support ipv6 in the first place. But instead of dropping all ipv6 traffic, all ipv6 traffic will go through local connection if your local connection support ipv6.<p>Not sure if it is a intentional design choice or serious bug? While I haven&#x27;t looked very deep into it but I doubt ipv6 connections got dumped to local is encrypted in anyway. Mac version doesn&#x27;t seem to be have this problem and properly dumped ipv6 link when the vpn server doesn&#x27;t support ipv6.