i have RB500 running 2.9rc7. I have 2 interfaces that are configured for point-to-point links, with /29 networks on each. When I enable OSPF on each interface, a *new* corrosponding route appears for that network with an INVALID tag. The old route (not invalid) remains, as well. OSPF (and all network traffic, for that matter) ceases when the invalid route appears.
I have supout.rifs I can send if there is a particular place to submit these for the 2.9rc testing.