Policy Statement on Address Space Allocations

Hank Nussbacher HANK at taunivm.tau.ac.il
Sat Jan 27 20:25:06 UTC 1996

On Fri, 26 Jan 1996 14:03:19 -0000 you said:
>But still, sorry that it wasn't as smooth as it could
>have been if there hadn't been a flaw in the filtering
>that crept in in about April, long before anyone was
>even really thinking of allocating from
>However, as I think everyone remembers, after a short while,
>in an effort to assist in getting aggregation of the
>then-announced bits of working OK and giving
>people some time to get used to the filtering, I did relax
>the filtering on to permit /19s.
>As you note, this was to the benefit of other peoples' customers.
>| the real message is if you have a 206+ address, make sure that your
>| provider can put it into an aggregation block for you (or go to sprint).
>Right, and we have been warning our customer base for
>some time that if they announce a 206+ address that is
>not aggregatable into something reasonably big (like a /18),
>they run the risk of losing connectivity to other providers
>if they ever were to impose similar filters for business
>or technical reasons.

Lets take a real world example between Sean's and Daniel's arguments.
I am the registry of Last Resort for Israel and I assign CIDR blocks
to ISPs here in Israel.  I follow the slow start model of RIPE
and give initially a /22 and then a /21 and then a /20, etc.  One new
ISP in Israel wanted more address space and found that Net99 (all ISPs
have to connect to an ISP in the USA due to Israeli gov't regulations)
would give it a /21 from and later Agis gave it a /19

So we have now an ISP that circumvented the allocation policies and
went to the USA to get cheap, large blocks at possibly an expense
of them not being portable and/or not routable even if it is
portable in the future.

The smaller, new ISPs that don't know even what questions to ask will
get stuck more and more by this type of situation.  We can't do anything
about that.  But we do need a better GLOBAL policy for IP address allocation
that everyone adheres to (perhaps I am asking for utopia).

>	Sean.

Hank Nussbacher

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