What range of values in the first hextet of an ipv6 address indicates a packet is part of a multicast broadcast? (lab 7.2.5.4) 2. which bits of an ipv6 address represent the network portion? (lab 7.2.5.4) 3. on lab 7.2.5.5 why can the same link-local address, fe80: : 1, be assigned to both ethernet interfaces on r1? 4. what is the subnet id of the ipv6 unicast address 2001: db8: acad: : : 1234/64? (lab 7.2.5.5) 5. what is the main feature that distinguishes ospfv3 from ospfv2? (lab 6.3.3.6) 6. if the ospfv3 configuration for r1 had a process id of 1, and the ospfv3 configuration for r2 had a process id of 2, can routing information be exchanged between the two routers? why or why not? (lab 6.3.3.6) 7. where would you configure passive interfaces, and why? (lab 4.4.3.5) 8. what command causes routers to stop sending and receiving hello packets over an interface? (lab 4.4.3.5) 9. how does eigrp for ipv6 differ from eigrp for ipv4? (lab 5.2.3.6) 10. why would you troubleshoot eigrp for ipv4 and eigrp for ipv6 separately? (lab 5.2.3.6)