This is a real problem for the VPN services that offer secure browsing—IPv6 isn't working at all or isn't working as well. There are plenty of reports of VPN "leakage," which means that data being transmitted over wireless networks isn't staying as secure and "hacker proof" as it does with IPv4 transmissions.
Oct 14, 2009 IPv6 problem - Windows 7 Help Forums Dec 30, 2009 Ipv6 problem in Windows 7 - TechArena Community Aug 01, 2010
Dec 14, 2018 · Back in the Windows 7 days there was a condition where there would be a lag getting to the Internet when IPv6 was enabled and your router didn’t support it. But starting with Windows 8 and Server 2012, Windows detects that there is no route to the Internet in IPv6, remembers this, and then prefers IPv4 for this type of traffic.
By default, the 6to4 tunneling protocol is enabled in Windows Vista, Windows Server 2008 or later versions when an interface is assigned a public IPv4 address (that is, an IPv4 address that is not in the ranges 10.0.0.0/8, 172.16.0.0/12, or 192.168.0.0/16). 6to4 automatically assigns an IPv6 address to the 6to4 tunneling interface for each such IPv6 Command line Testing & Troubleshooting in Windows In Windows Server 2008 and Windows Vista, the ipconfig command without options displays IPv4 and IPv6 configuration for all physical adapters and tunnel interfaces that have addresses. The following is an example display of the ipconfig command on a computer running Windows Server 2008 or Windows … [SOLVED] IPV6 Causing connectivity issues all of a sudden
That is certainly true for the IPv6 support in Windows 7. Even though Windows 7 is the latest Microsoft desktop operating system, its IPv6 support is very similar to the features inside Vista and
Sep 12, 2017 · In my case, the client replaced a cheap router with another cheap router (rather than buy the firewall I recommended) and it had IPv6 enabled. Some systems got the IPv6 address of the router as their primary DNS server. I disabled IPv6 on that router and the problems went away. For good measure, I also set a static IPv6 address on the server. Gregg