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Part IX: Appendixes > Chapter 18 - Pg. 698

698 CCNP ROUTE 642-902 Official Certification Guide 6. C. Because the question states that no IPv4 configuration exists, OSPFv3 cannot de- rive a 32-bit OSPF router ID. Before OSPFv3 works, R1 needs to define an OSPF router ID (using the OSPF router-id command). 7. A. The redistribute command does not have a subnets option for IPv6 because OSPFv3 has no concept of IPv6 classful networks nor their subnets. As configured, the redistribute command redistributes only EIGRP-learned routes. If the include- connected parameter had been included, the connected route for 2000:0:0:1::/64 would have also been redistributed. Local routes are never redistributed. 8. B. The only configurable item after the interface that does not first list a keyword is the administrative distance parameter. Chapter 18 1. C. Native IPv6 makes the most sense when the IPv6 deployment is pervasive, with traffic loads heavy or at least steady. Point-to-point tunnels work best when IPv6 is needed in only a subset of sites but also when the traffic should be somewhat regular or with higher volume. Multipoint tunnels also work well when IPv6 is needed in a subset of sites, but it is more appropriate when the traffic is more occasional and lower volume. Finally, NAT-PT is useful when an IPv4-only host needs to communi- cate with an IPv6-only host.