I recently go a Linksys home wifi router, by default it enables ipv6 on the LAN. If there is no native IPv6 on the WAN side (which is my case since FiOS doesnt do v6 yet) the Linksys defaults to a v6 tunnel.

For the first few weeks of using the router, I had no idea alot of my traffic was going out via the v6 tunnel.

Then I started getting random reachability and availability issues. Google would not load, but Bing and Yahoo would, and so on. I thought it was a FiOS issue, but after digging, I discovered the v6 tunnel, disabled it and all my issues went away.

I dont know what Linksys uses for the v6 tunnel because its buried in the firmware, but any tunnel service is vulnerable to a variety of issues that could effect access. Its odd that it always effects Windows update all the time, but who knows.

-John

On 11/Nov/18 18:51, Lavanauts wrote:

I’m on native IPv6 via Spectrum and have no problems with Windows Updates.  Could this be a tunneling issue?

I do run 6-in-4 from my backbone to my house as my FTTH provider does not do IPv6.

I can't imagine this to specifically be the issue, as all other IPv6 traffic is fine, but at this point, I'm open to suggestion.

Mark.