Exactly this is the problem, without this device my internet is very limited. I am planning to setup the similar Zyxel Armor Z2 and do not flash the Netgear before everything workswith the Zyel. Next problem is all the wireless bridges have to be configured new before with the new MAC-address a.s.o.
Most things I have to do via ssh.
At Is there a “newer” documention for creating a wireless backhaul? - #4 by linuxuser there is
Can I configure something like <config wifi-iface 'wifinet**3**'> with the data of the Zyxel, so I can easily change? If so, I don't know how to assign / switch to the correct connection.