I can affirm your suggested configuration is working.
Haven't found any considerations or recommendations about better to use a pointopoint interface with an IP as default route or the (for me) new way with the on-link route. Perhaps it would be good to have the choice for both ways and at least - as you already have mentioned - a better discoverable documentation how to reach the goal :-)
Thanks very much Mathieu,
I can affirm your suggested configuration is working.
Haven't found any considerations or recommendations about better to use a pointopoint interface with an IP as default route or the (for me) new way with the on-link route. Perhaps it would be good to have the choice for both ways and at least - as you already have mentioned - a better discoverable documentation how to reach the goal :-)
kind regards
Christoph