As in the diag attached,
I am running ospf in R1,R2,R3 and running BGP ins R3 and R4, where R2 and R3 are in NSSA.
I want more explanation for the excerpt from RFC3101
"Normally the next hop address of an installed AS external route
learned by an NSSA ASBR from an adjacent AS points at one of the
adjacent AS's gateway routers. If this address belongs to a network
connected to the NSSA ASBR via one of its NSSAs' active interfaces,
then the NSSA ASBR copies this next hop address into the forwarding
address field of the route's Type-7 LSA that is originated into this
NSSA, as is currently done with Type-5 LSAs."
Consider the IP interface address of R4 connected to R3 is 10.20.30.1 and R4 is advertising 126.96.36.199.
In that case the next hop address for 188.8.131.52 in R3 would be 10.20.30.1. My doubt is how can it belongs
to to a network connected to NSSAs' active interfaces ? is there any chance , pls explain with an example ?