On Wed, May 27, 1998 at 06:08:40PM -0500, Sean Donelan wrote:
For some unknown reason, although IHETS has been allocated the entire traditional class B 165.138.0.0, they are announcing it as a partial 165.138.0.0/20. They could announce the entire /16. But they've chosen not too. If IHETS wants to ensure they can reach as much as the Internet as possible, they could follow Sprint's filtering policy, and announce their network as a 165.138.0.0/16. IHET could check http://www.sprint.net/filter.htm for a description of the policy.
Since IHETS seems to be a SPRINT customer, I sure would appreciate it if the SPRINT NOC could explain to IHETS why such address filters exist, and if Sprint thinks its a good idea to apply them to other ISPs, why the reciprocal argument would also be true. -- Sean Donelan, Data Research Associates, Inc, St. Louis, MO Affiliation given for identification not representation
It is also fascinating that Sprint's argument for their filtering (per their web page) is that ARIN has espoused this as a "proper" thing to do. They even provide a web reference to ARIN's statements in this matter. I have to ask what in the dickens ARIN thinks it is doing advocating *policy* on address filtering for ISPs, how this squares with ARIN's 501c(6) status, and how this can be justified, particularly when it shows up referenced like this as a "business justification". This polciy CERTAINLY has nothing to do with route table size, and wouldn't if it was enforced at the /19 level across the board. So just what is Sprint's, and ARIN's, justification for those *policy* statements? And does anyone on NANOG have other references to ISPs who *also* have picked up on this "suggestion" and have implemented something similar? [This is a request as an ARIN AC member, who has tried to get a lot of these kinds of questions answered from officers and trustees of ARIN] CC: arin-council@arin.net -- -- Karl Denninger (karl@MCS.Net)| MCSNet - Serving Chicagoland and Wisconsin http://www.mcs.net/ | T1's from $600 monthly / All Lines K56Flex/DOV | NEW! Corporate ISDN Prices dropped by up to 50%! Voice: [+1 312 803-MCS1 x219]| EXCLUSIVE NEW FEATURE ON ALL PERSONAL ACCOUNTS Fax: [+1 312 803-4929] | *SPAMBLOCK* Technology now included at no cost