RE: 64.0.0.0/8 etc. [was: Re: BGP Question - how do work around...]

["Daniel Golding" <dan () netrail net>]

There are plenty of folks who have space in 64/8. However, no one should be
classfully advertising 64.0.0.0/8, as it has not been assigned to any single
entity. Therefore, anyone who is advertising this block is doing so in
error, and it's permissible to filter the EXACT 64.0.0.0/8 route
announcement. (as opposed to filtering "64.0.0.0/8 or longer", which would
blackhole many folks)

- Daniel Golding



-----Original Message-----
From: owner-nanog () merit edu [mailto:owner-nanog () merit edu]On Behalf Of Shawn
McMahon
Sent: Tuesday, February 27, 2001 6:25 PM
To: nanog () merit edu
Subject: Re: 64.0.0.0/8 etc. [was: Re: BGP Question - how do work around...]

On Tue, Feb 27, 2001 at 08:01:46AM -0800, Christian Nielsen wrote:
> > For 64.0.0.0/8 this seems to have happened in the meantime... but now
> > there's a route for 62.0.0.0/8 (the RIPE equivalent of 64.0.0.0/8),
sigh.
> i dont know why you even allow 64/8 and/or 62/8 into your network. Filter
> them...

Aren't many Earthlink dialups in 64/8?

Filtering that would mean his employees couldn't get Sprint DSL, and
prevent millions of potential customers from reaching his web servers.

That's not smart business.  It's called "cutting off your nose to spite
your face."