Thus spake "Tony Hain" <alh-ietf(_at_)tndh(_dot_)net>
Jari Arkko wrote:
Right. Or we can try to label it, but that labeling may not
correspond to what is actually done with it.
If you don't label it there is no clearly agreed way to filter these out
if you don't want them.
If they're truly "local" prefixes, they won't need to be filtered in the
first place because they won't be advertised. If they're getting
advertised, they're not "local" prefixes and presumably you don't want to
filter them because there's someone at the other end who wants you to talk
to them.
If you don't like PI routes at all, the RIRs have made it easy to filter
them by assigning PI out of specific blocks and in much smaller sizes than
LIR blocks. To channel Randy for a moment, I encourage my competitors to do
this.
The people that are fighting having ULA-C are the same ones
that don't want PI, and they are trying to force ULA-C == PI so
they can turn that argument around and say 'we told you PI was
a bad idea' when there is no way to filter out what would have
been ULA-C.
I am a vocal supporter of PI and vocal detractor of ULA-C/G. In fact, the
first time that ULA-C was proposed, I saw it for what it was (an end-run
around the RIRs) and became a PI proponent; before that, I didn't really
care either way.
Do not stuff words into people's mouths, particularly when they're watching.
If you really believe there is going to be a routing system
problem, then you absolutely have to support ULA-C because
it is the only way to enforce keeping private space private.
I believe there will be a routing system problem at some point, and it pains
me that I was still forced to support PI anyways because the IETF has
utterly failed to produce an alternative that is viable _in the views of the
operational community_.
However, I do not believe the "problem" will be due to "local" routes at
all; it will be due to the massive numbers of legitimate routes that having
PI causes. However, without PI, there would be no routes at all because
IPv6 would be ignored. PI is, unfortunately, the lesser of two evils.
S
Stephen Sprunk "God does not play dice." --Albert Einstein
CCIE #3723 "God is an inveterate gambler, and He throws the
K5SSS dice at every possible opportunity." --Stephen Hawking
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