filtering long prefixes
jbradley at westel.com
Thu Sep 21 22:02:09 UTC 1995
On Thu, 21 Sep 1995, Sean Doran wrote:
> reject BGP announcements which:
> -- are in the range of 18.104.22.168/8 to 22.214.171.124/8
> with a mask longer than 18 bits
> -- has a mask longer than 24 bits
> - --
Unfourtunatly the Canadian IP registrar has been handing out addresses in
the 126.96.36.199/16 range to anyone applying for a IP address in Canada.
Sprint has several Canadian customers Sprint Canada, Cyberstore, and Hookup
that are anouncing routes to you in this block.
advisory: AS690 1:3830(11) 2:3830(147)
changed: ejw at cyberstore.ca 950811
The following are the addresses of my customers that would be filterd by
this policy. None of these people were told that these addresses could only
be routed to CA*net.
> [206/8 more-specifics]
> [ prefix as-path ]
> 188.8.131.52/23 3561 5071
> 184.108.40.206 3561 5071
> 220.127.116.11 3561 5071
> 18.104.22.168 3561 5071
> 22.214.171.124/23 3561 5071
Thanks for the warning. I understand your reasons for this, unfourtunatly
the Canadian IP registrar may have been unclear on the concept.
John Bradley | Office Phone (604) 990-2158
WesTel Telecommunications Ltd | Fax (604) 990-2020
Vancouver, BC Canada | Cell (604) 240-8478
John_Bradley at westel.com | Autonomous System 5071
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