[MT-AU Public] NBN DHCP interface config example for Aussiebroadband HFC

Hi guys, Aussiebroadband HFC NBN getting installed today. Does anyone have some pointers for what I'm missing... What I need to achieve is port10 acting as a DHCP client on Native VLAN. I've broken port 10 out of the bridge, and set it to native / default VLAN 11 (because I don't want it on the default VLAN 1). What I can't work out, is how to tell it to make the interface act as a DHCP client (which I'm guessing should in turn build default routes etc etc etc)? I've tried creating a VLAN interface under the physical but this doesn't have any DHCP client options either... I don't need PPPOE - I just need DHCP. Any suggestions? Thanks! Chris