Motorolla wimax dyndns how to?

[hadi57]

hi

i was using dsl line and modem configure as bridge, i was able to access my pfsense box from wan with no problem.

now i have a motorolla wimax CPEo400,

1- i disabled the dyndns feature in pfsense
2- i enabled the wimax's dyndns, selected the dyndns provider and used the fqn i was using in pfsense box
3- enabled the UPnP IGD, put the wan ip adress of pfsense box in dmz.

now i see the private wan adress of pfsense box.

any clue to fix this

thanks in advance

hadi57