@Kevin_Z Is there any vendor update. This is a significant bug, and your product isn't cheap. Surely disabled means disabled and that ought not to be an issue to implement??

@Kevin_Z is it possible to provide a comment on what you intend to do about this feature considering the potential it has to cause serious issues on a network even when "disabled".

Agreed this is not desirable behaviour at all. Disabling DHCP should mean exactly that. If you want a "smart" DHCP feature which will in most cases cause havoc with someone's network setup then also...

Come on support, you must know why your software is constantly talking to DNS root servers???

Surely someone from tp-link knows why their product is reaching out thousands of time to a DNS root server...

Appreciate the input. Interestingly with the latest M9 firmware a Guest WLAN (using VLANs) was provided for both ethernet and AP backhaul. So these devices can operate with tagged traffic for sure....