PPPoE & Static IP on Interface

Hi,

I would like to achieve the following

A router will establish a PPPoE session with a PPPoE Server. This should be the default route.

Then, if for example I suspend the users account (and the PPPoE Client no longer has an address) the user should use the IP from the dhcp-client.

Is there a dhcp option that I can set that changes the “distance” so I don’t need to make the changes on all of my clients?