A.ipv6 address PREFIX_1::1/64 B.ipv6 autoconfig 2001:db8:2222:7272::72/64 C.ipv6 autoconfig D.ipv6 address 2001:db8:2222:7272::72/64
A.2031:0:130F::9C0:876A:130B B.2001:0DB8:0000:130F:0000:0000:08GC:140B C.2001:0DB8:0:130H::87C:140B D.2031::130F::9C0:876A:130B
which address range efficiently summarizes the routing table of the addresses for router main?()
A.172.16.0.0/18 B.172.16.0.0/16 C.172.16.0.0/20 D.172.16.0.0/21