MikroTik strikes again ?

Tim Warnock timoid at timoid.org
Mon May 3 05:38:50 CDT 2010


> 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 at spectraaccess.com]
> Sent: Monday, 3 May 2010 8:26 PM
> To: nanog at 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.
 





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