/24s run amuck again

Sun Jun 10 09:09:47 UTC 2001

At 14:10 09/06/01 -0400, Richard A. Steenbergen wrote:

> >  11371      307      Rhythms NetConnections

Email sent to gharmon at rhythms.net, cgreen at rhythms.net, 
doroberts at rhythms.net on Feb 8 - no response.

> >   3491      651      CAIS Internet
>
>DSL providers are becoming very bad about this. Someone pointed out to me
>off list that CAIS had carved up PSI's /8 into over 500 /24s.
>
> >    690      502      Merit Network
>
>Well at least we don't have to go too far to find the guilty party. :P
>
> >  18994      468      Global Crossing
> >  15870      436      Global Center Frankfurt
> >  18993      325      Global Crossing
>
>Those are the GlobalCenter datacenters being converted into the Exodus
>network. It looks like they are leaking a sizable number of /32s /30s etc,
>and since its GBLX space I'm assuming its stuff that used to be aggregated
>into a single announcement.

Email sent to: ipadmin at gblx.net, huberman at gblx.net, ip-eng at gblx.net, 
scarter at gblx.net, bgp at gblx.net, bp at gblx.net on June 4 - everyone responded 
that the problem was forwarded to Exodus and from there it disappeared into 
a black hole.

Basically, after having sent out dozens of emails over the past 6 months I 
have come to the conclusion that there are a few out there that will fix 
things when presented with the problem.  But the vast majority either don't 
have a clue, don't want to have a clue or couldn't give a damn that the 
routing tables are increasing in size.

-Hank

> > There is no attempt to measure aggregation - that's the job of the
> > CIDR Report. This simply looks at the prefix announced and if it is
> > outside the above limits, it is counted. Makes very interesting
> > reading...
>
>The one interesting pattern I noticed in the rampant /24 abuse was non-
>contiguous announcements. It's likely that this kept them off the CIDR
>Report and any other scans which only looked for contiguous announcements.
>For example:
>
>1.2.3.0/24
>1.2.5.0/24
>1.2.7/0.24
>
>--
>Richard A Steenbergen <ras at e-gerbil.net>       http://www.e-gerbil.net/ras
>PGP Key ID: 0x138EA177  (67 29 D7 BC E8 18 3E DA  B2 46 B3 D8 14 36 FE B6)