NVG589 Xbox connected to managed switch - getting Strict NAT

I followed SomeJoe7777's post on how to properly setup a home network to prevent Uverse STBs from flooding the whole network.  All seems to be working well including my Wireless Access Point not being killed by the multicast.

http://forums.att.com/t5/Setup-and-Self-Install/UDP-Traffic-flooding-with-Airport-Express-behind-switch/m-p/2761815#M159

Last remaining issue has to do with my Xbox One.  It is connected via Ethernet to a Netgear GS105E switch which is connected to another Netgear GS108T swtich.  This allows me to create/leverage VLANs to keep multicast and internet traffic separate.  

The Xbox is able to connect to the internet but is getting a Strict NAT error.  What is causing this and is it possible to fix it using my setup:

NVG589-->GS108T-->GS105E-->Xbox One

Thanks,

Joe