On Wed, 29 Jan 2014 14:16:43 -0800, Seth Mattinen wrote:
On 1/29/14, 14:01, Leslie Nobile wrote:
Additionally, ARIN has placed 23.128.0.0/10 in its reserves in accordance with the policy "Dedicated IPv4 block to facilitate IPv6 Deployment" (NRPM 4.10). There have been no allocations made from this block as of yet, however, once we do begin issuing from this block, the minimum allocation size for this /10 will be a /28 and the maximum allocation size will be a /24. You may wish to adjust any filters you have in place accordingly.
I know ARIN doesn't care about routability and all that, but good luck with those /28s.
"This block will be subject to a minimum size allocation of /28 and a maximum size allocation of /24. ARIN should use sparse allocation when possible within that /10 block." Thanks for the initial sparse allocation for some time the /28 will be the only tennant of the covering /24 so they will be able to advertise the /24 aggregate as well as the /28. In time the reachability of the /28s should improve and if some other /28 is allocated inside an already populated /24 then as long as they can both see each other's /28s they can still both advertise the /24 aggregate - or perhaps agree for a common transit provider to do it. As acceptance of the /28s improves further and less traffic flows to the aggregates, perhaps large providers would agree to replace the customer /24 aggregates with a single /10 aggregate to help out the (hopefully few) stragglers who still filter /28s. -Rob