nanog mailing list archives

Re: Routing Loop


From: Danny McPherson <danny () tcb net>
Date: Sat, 15 Mar 2008 18:00:32 -0600



On Mar 15, 2008, at 4:49 PM, Florian Weimer wrote:


There's also somewhat odd data in RADB (look at the changed: line):

route:         194.9.64.0/19
descr:         SES-Newskies Customer Prefix
origin:        AS16422
remarks:       SES-Newskies Customer Prefix
notify:        noc () ses-newskies com
mnt-by:        MNT-NWSK
changed:       noc () ses-newskies com 20080314
source:        ARIN

This is in the middle of RIPE-managed swamp space, a /19 definitely
doesn't belong there.

Yeah, I saw that a bit earlier and it did seem incredibly suspicious
given the timing.  Had I seen anything in the routing system itself for
that explicit /19 related to this I would mentioned it, but nothing there.

Amazingly, a query to the NOC at SES Newskies yielded a near-
immediate response, which said they added it a few days back because
they were updating some policies and noticed it existed in a prefix list for one of their upstreams, that it appeared to be legacy, and that they'd get
it removed.

All the more reason RIR allocation authentication used to seed IRR
information would be of value for routing policy specification, let alone
informational purposes.

-danny


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