Do you mean that the interface needs to be set to eth1 (as opposed to the pppoe-interface) or rather the upcoming change in ROS 7.3 that does not allow cake as a simple queue type?Cake is interface queue only.
You are right. SA expires before rekey. Set pfs to none and will monitor..Yes, they establish correctly. But do they rekey without issue? Have a look at your log...Thats odd - I've got pfs set in phase 2 and the IKEv2 tunnel establishes correctly: