nanog mailing list archives

Re: ARIN allocating /20 netblocks?


From: Karl Denninger <karl () mcs net>
Date: Sat, 16 May 1998 14:27:48 -0500

On Sat, May 16, 1998 at 03:07:20PM -0400, Jon Lewis wrote:
On Fri, 15 May 1998, James Rishaw wrote:

ARIN has made a slight change to make it easier for small ISPs to get
provider independant netblocks.  They will assign a /20 and reserve the
adjacent /20, the customer is allowed to announce the entire /19.
For further information, please view http://www.arin.net/initial-isp.html

Now, let's `cat post | bullshitfilter.pl` and see what we get:

ARIN has made a slight change to make it easier for them to make more
money by allowing anyone to register for IPs.  They will assign a /20 and
reserve the adjacent /20...

That must have been your bullshitify.pl filter.

The change made it possible for many "small" ISPs to truely multihome.
FDT is one of them.  When I found out about "the change", I was about to
renumber FDT into Digex address space, since we did not qualify under the
old rules for an ARIN CIDR block (immediately fill 80% of a /19).  The
/20 Digex was going to give us was in filtered space, meaning anyone
filtering BGP like Sprint would not see our advertisements and would only
have reached us through Digex...making our additional T1's to the net
somewhat pointless.

------------------------------------------------------------------
 Jon Lewis <jlewis () fdt net>  |  http://noagent.com/?jl1 for cheap 
 Network Administrator       |  life insurance over the net.

You should not have had the original problem (IMHO of course).

Consider, Jon, what happens if you fail to meet the criteria to keep that
whole /19 - some time down the road.

--
-- 
Karl Denninger (karl () MCS Net)| MCSNet - Serving Chicagoland and Wisconsin
http://www.mcs.net/          | T1's from $600 monthly / All Lines K56Flex/DOV
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