I just installed Marshmallow 6.0.1 on my Priv and now having wifi issues.

After upgrading the OS, my wifi automatically turns off and on randomly. When I go to the wifi setting and turn it on after less then a minute to turns off. When I attempt to connect to my home wifi which I never had problems with before it says it's attempting to connect and disconnect in some kind of strange cycle. I try setting my wifi to always keep wifi on during sleep and trying it in never keep wifi on during sleep still does the same thing.

Try rebooting it, doing the 32second power cycle?