IOT Device and mDNS

Hi Everyone,

I have been having issues with IOT devices maintaining their registration with Apple HomeKit.

Problem:

I have several Smart Bulbs, thermostats, and TVs which I have registered with Apple HomeKit. I was initially able to get all the devices working where I was able to control them. After the Fortigate reboots, most of the time only 1 or maybe 2 devices will work after a reboot. It’s 8 IOT devices in all.

Topology & Configuration:

I have a 70G, 110G, FAP231F, and two FAP23JK. The AppleTV that acts as the Hub is on the same SSID as the IOT devices. The SSID is also configured in tunnel mode.

Troubleshooting:

I have disabled any kind of suppression functions for the SSID, I have a multicast rule allowing mDNS even though the devices are on the same SSID. I have Multicast Enhancement enabled. I have removed the devices and attempt to re-register them. I have enabled IPv6 using non-routable range. I don’t have any features enabled that would interrupt the _tcp.local DNS lookups for mDNS.

I am just at a lost to why after a reboot of the Fortigate, the devices do not connect anymore to the AppleTV that is acting a hub. Has anyone else experienced this issue? Are my expectations skewed to think the enterprise gear would play nice with mDNS and IOT devices?