I posted this in a couple of other conversations, so I copied it over. Hope this helps!!!!
Have you guys checked your router settings?
I found and changed my IPV6 settings from Auto Detect to 4to6 tunnel, and we are on day 5 of notifications working on our home WiFi. I know this does not help with other WiFi systems that you can't change, but at least this helps while we are at home. Good Luck and let's hope the next update when it comes, fixes this and doesn't' break anything else on what was a perfect phone on KitKat...
