On Fri, 13 Apr 2018, Bjørn Mork wrote:
Date: Fri, 13 Apr 2018 10:13:47 +0200
From: Bjørn Mork <[email protected]>
To: Anurag Bhatia <[email protected]>
Cc: North American Network Operators' Group <[email protected]>
Subject: Re: IPv4 and IPv6 hijacking by AS 6
Anurag Bhatia <[email protected]> writes:
Similar for AS2.
I believe we've seen bogus low AS number announcements a few times
before, and they've usually been caused by attemts to configure
AS path prepending without understanding and/or reading the docs.
Someone might have wrongly assumed that
set as-path prepend 133711 133711
could be written shorter like
set as-path prepend 133711 2
and there you go...
Yes, ASN2 sees about 1-4 configuration related "rogue" announcements per
month. What is going on right now does not appear to be a small
misconfiguration.
The only route we (University of Delaware) are announcing w/ ASN2 is
128.4.0.0/16.
Jason
Jason Cash
Deputy CIO
University of Delaware
[email protected]
302-831-0461
