Re: rib-groups importing: route imported but not advertised to OSPF peers
I dont think we have enough information to help answer your question, How is R4 confifgured to suppot OSPF with the other routers?
The route is considered and ospf route as you can see from both advertisement the protocol preference:
OSPF requires full mesh. As far as we can tell you have 2 ospf areas. What interface on R4 is configured for OSPF and what area is it in. Can you show the details of the ospf database on both R4 and R6?
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