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Question :-

The IGP next-hop reachability for a BGP route is lost but a default route is available. Assuming that BGP connectivity is maintained, what will happen to the BGP route?
It will be put in a hold-down state by BGP until the next hop has been updated.
It will be removed from the BGP table.
It will be considered a valid route.
It will be considered invalid for traffic forwarding.

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