[address-policy-wg] Policy Change Request - Allow address allocations for anycast DNS operation
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Gert Doering
gert at space.net
Tue Jun 15 16:28:40 CEST 2004
Hi, On Tue, Jun 15, 2004 at 04:10:57PM +0200, Wilfried Woeber, UniVie/ACOnet wrote: > >> If you qualify for at least /24 of v4 address space, there shouldn't > >> be a problem with current v4 policy? > > > >There is. People don't want to use part of their PA block for the > >anycast announcement (due to "allocation boundary" filters) and you > >won't qualify for a /24 PI with just a single IP address used inside > >the block. > > This, together with the fact that (if I remeber correctly!) there is no > longer a minimum usage restriction for becoming an LIR should help to > solve this problem?! I can't fully follow you here. I described the problem, but you seem to interpret this as a solution? Take, for example, DENIC. They are a LIR, and have "their" LIR PA /20 address block (81.91.160.0/20). People "know" that inside 81/8, only /20 or larger sized blocks have been allocated, and might filter out everything more specific than a /20. So using a /24 out of the PA /20 allocation for anycasting might not work reliably "enough" to warrant the effort, due to non-reachability in those networks that have filters set up (this might be debatable, and indeed is the key issue whether an independent address block - and policy - is "necessary" or not). DENIC cannot get another "independent" PA block (because the first one is not at 80% utilization), and a single IP address doesn't qualify for a /24 PI. So they can get neither PA nor PI for this specific purpose. Now *DENIC* has enough /24 PI networks lying around from de.zz times :-), but the idea is to have a generic-enough policy that will permit similar deployments for other "DNS providers" as well. Gert Doering -- NetMaster -- Total number of prefixes smaller than registry allocations: 60210 (58081) SpaceNet AG Mail: netmaster at Space.Net Joseph-Dollinger-Bogen 14 Tel : +49-89-32356-0 80807 Muenchen Fax : +49-89-32356-299
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