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Re: Why does Sprint have address filters again?
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 18.104.22.168, they are announcing it as a partial > 22.214.171.124/20. 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 126.96.36.199/16. 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: firstname.lastname@example.org -- -- 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