Hi,   I have some IPv6 Teredo traffic   I not sure what would be using it since our win 2019 servers are IPv4 only and Pc ip v4 our isp is only ipv4.   Can you you block this type of traffic? I thought I'd take a block and see what breaks approach.  Turned on content filter Proxy and Anonymizers.   Only thing I could think of would be Microsoft update? Updating from another windows computer?     EDIT :Looking at the current state of Meraki's ipv6    I did the following on the computers   Open Run Type ncpa.cpl Double tap on the Active Network. A new tab will open. Click Properties Uncheck IPv6 Apply > OK   No more IPv6. Happy days   EDIT2: Apparently setting the registry to disable ipv6 is the recommended approach.     It would be nice to hear any opinions on why you should leave this on or off? Or point me to an article.             ... View more