On 19-sep-2007, at 0:10, Keith Moore wrote:
What bugs me is that I think that the existence of mini-cores (or more
generally, a large number of private interconnections between networks
using ULA prefixes) leads to a world where it becomes important to
have
a particular kind of source address to talk to a particular kind of
destination address, and in which applications are expected to choose
the right source address in order to talk to a particular kind of
destination address. So the sources addresses available to a
particular
host end up being like a keyring. I don't think that's a good
burden to
put on apps, and I don't think that using addresses like
authentication
tokens is a good way to go.
I don't think having a large set of source addresses with different
reachability is a good thing, but it's likely unavoidable to have
several.
If applications don't want to worry about addressing issues, the only
solution is that applications don't get to see addresses in the first
place. (The multi-address genie is out of the box regardless of
anything else just by virtue of having an IPv4 and an IPv6 address.)
The corollary being that protocols implemented inside applications
must be address agnostic as well.
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