[126138] in North American Network Operators' Group
RE: MikroTik strikes again ?
daemon@ATHENA.MIT.EDU (Tim Warnock)
Mon May 3 06:39:32 2010
From: "Tim Warnock" <timoid@timoid.org>
To: <nanog@nanog.org>
In-Reply-To: <4BDEA4A9.9020904@spectraaccess.com>
Date: Mon, 3 May 2010 20:38:50 +1000
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
> Adrian M wrote:
> > MikroTik strikes again ?
> >
> > %BGP-6-ASPATH: Long AS path ... 39412 39625 39625 39625 39625 39625
> > 39625 39625 39625 39625 39625 39625 39625 39625 39625 39625 39625
>
> From: Bret Clark [mailto:bclark@spectraaccess.com]
> Sent: Monday, 3 May 2010 8:26 PM
> To: nanog@nanog.org
> Subject: Re: MikroTik strikes again ?
>
> Uhm....okay...but why does anyone prepend their ASN that much? Are you
> saying the Mikrotik did that on purpose?
>
MikroTik asks for an amount of prepends rather than what ASN to prepend
with.
There was a bug in an old version that would modulus the ASN with 256 and
prepend that many times.
In this case 39625 modulo 256 = 201 prepends.
