>> there are a lot of links where we assign multiple subnet prefixes
>> (different /64 from different upstream ISP). it is useful, for example,
>> for RFC3178. also, if you are willing to use router renumbering
>> and such, a /64 prefix out of fec0::/48 range will be added too.
>This is interesting information. Can you say how many prefixes
>are typically advertised?
not sure about "typically", but around 3 to 5 prefixes are advertised
in my office, another office, and home. at past IETFs and ipngwg
interim meetings, we advertised 2 or 3 prefixes because we were
multi-homed. so pls do not assume that there's single subnet prefix
on a link.
itojun
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