A.On-Passive B.On-Auto C.Passive-Active D.Desirable-Auto E.Active-Active F.Desirable-Desirable
A. IPv6 prefixes B. link-local addresses C. solicited node multicast addresses D. IPv6 prefixes and topology information
A. An IPv4-compatible tunnel is a static tunnel, but an 6to4 tunnel is a semiautomatic tunnel. B. The deployment of a IPv4-compatible tunnel requires a special code on the edge routers, but a 6to4 tunnel does not require any special code. C. An IPv4-compatible tunnel is typically used only between two IPv6 domains, but a 6to4 tunnel is used to connect to connect two or more IPv6 domains. D. For an IPv4-compatible tunnel, the ISP assigns only IPv4 addresses for each domain, but for a 6to4 tunnel, the ISP assigns only IPv6 addresses for each domain.