In your previous mail you wrote: For a end-device (a host), if the interface connecting to IPv6 network is configured with IPv6 global address, then automatic configuration of link-local address is mandatory for that interface? Consider the host is being statically configured with IPv6 default gateway address. => as far as I know at the exception of some very specific link types the configuration of a link-local address per link is mandatory (note I didn't add "automatic"). BTW a default gateway address is supposed to be link-local.
Without the presence of link-local address on interface, whether any functionality or IPv6 conformance issue would arise? => some packets on the link are required to use a link-local address. So, for DAD it would use unspecified address (::) as source address, for Address resolution it would use the IPv6 global address, no need of router discovery / prefix discovery in this host and applications would use global address. In this case, presence of link-local address is necessary? => DAD is per address (cf the DAD vs DIID debate). Regards [email protected] -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
