Hi,
I am trying to accomplish this right now with a Z3.
However on the local status page I can't seem to find the option anymore.
We're trying to expand our Z3's with an MG as well on a second WAN port. I vaguely remember that I was able to toggle this a couple of months ago on a Z3 but when I tried to do it today, pooof gone.
Did they suddenly decide that this option was too good for their Z3's? Forcing to go with an MX68 or something alike?
They also made a note in their documentation of the Z3, explicitly stating that no second port can be toggled for a WAN port. Which also suggests that is was something that used to be possible.
Cheers.