dear Matthew, all works fine with your tips. I chose adsl function of TD-8840T with dhcp enabled and TL-MR3220 as WAP (DHCP disabled). Many many thanks

Matthew cook wrote Hi Mrlavo, I have two suggestions for you. The first one: you can use the TL-MR3220 as a wireless access point. How to do, please refer to www.tp-link.com/en/article/?faqid=417....

Dear FF99, did you solve your issue? I have the same problem here trying to let my old TL-MR3220 communicate with my brand new TD-8840T.