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Solved
Firmware 12.1.11.10 iPhone disconnects
After quite a good run with the previous firmware, this update is causing issues again with at least my iPhone. It randomly disconnects and most times I can toggle the WIFI on the phone a few times ...
Turns out, if IPV4 is set to manual, automatic DNS doesn't work on iPhone/iPad. The DNS has to be set manually as well. Not sure why this wasn't a problem with v9.13.2.1, but it is now.
I cannot replicate this behavior on my PC as there is not an automatic DNS option, DNS must be set manually when setting a manual IP address.
At any rate, I think this is the solution: when setting a manual IPV4 address on an Apple device, scroll down to the DNS settings and configure the DNS manually as well - Automatic DNS does not work in this case.
I'll write this down to user error, I guess, uncovered by new firmware behavior.
bullm00n yes exactly. If IPv6 was working perfectly, you would have never known that the problem existed in IPv4 with a static IP address and dynamic DNS. But because IPv6 was flaky, that would cause periodic disconnections when it failed and IPv4 was in a failed state, and when you disabled IPv6, IPv4 would not work at all. I’m glad you’ve got a scenario that works for now. I can guarantee you NETGEAR is working very hard on IPv6 improvements, and it’s improved a ton in the last year. But part of it has been Apple too, I know for a fact they’ve made improvements in the last several releases as well. So we will get there. But for now, leave it disabled.