I applied your setting early on, so it may have helped (I forgot I did, but it's still set)... this could be why it finally saw the "IoT" network... but still can't see the main. I just joined a blink cam 20 ft off the ground 2 mins ago, and still... couldn't see the main
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For anyone with Sonos, here's what worked for me:
1) Disable Wi-Fi 7 on the main network
2) Go to Sonos app, your system devices should appear
3) Re-enable Wi-Fi 7 (if you want / need it)
4) Notice that all Sonos devices get moved to the "IoT" network
@workin247365, interestingly enough I had zero issues with Kasa devices (I have 20+).... The troublesome ones are Blink (still looking into it), Ring stick up cams, and Sonos.
For those with Peloton devices, I also was able to get those easily connected to the "IoT" network, they wouldn't pair with main.
An observation... the "IoT" network isn't a "security" network, it appears to be some logical separation of the main, but all devices can communicate bi-directionally over both. If you want a true "IoT" VLAN, maybe you have to create a separate one or explore applying some settings on the one created on setup.... that's for another day.