R6220 not allowing duplicate SSID
Just installed a R6220 on my network to serve as a Wireless AP. It is connected to my R7300DST router. The R7300DST router allows me to have the same SSID for both my 2.4 and 5 ghz bands. The R6220 does not. I have reset the R6220 to factory specs and reinstalled and it still does not allow duplicate SSID. Purchased a different R6220 unit and it has the same issue.
How can I get this corrected?