On Thu, 2010-07-22 at 20:24 -0400, Valdis.Kletnieks@vt.edu wrote:
On Fri, 23 Jul 2010 00:33:45 BST, Matthew Walster said:
I never saw the point of assigning a /48 to a DSL customer. Surely the better idea would be to assign your bog standard residential DSL customer a /64 and assign them a /56 or /48 if they request it, routed to an IP of their choosing.
If they're using autoconfigure for IPv6 addresses, what happens if they want to share that connection? Giving them a /64 off the bat means that a very sizable fraction of your users are going to call.
Um, but they will have 18 billion billion addresses in that /64. That should do them, unless they want to subnet in the home. Which is not so unusual, so while doing a /48 might be overkill, doing a /60 or even a /56 off the bat is not such a silly idea. Unless I've misunderstood Matthew, and he was suggesting that the /64 be the link network. That would indeed effectively give the customer a single address, unless it was being bridged rather than routed at the CPE. Not sure bridging it is such a good idea - most people will probably want their home networks to keep working even if the ISP has an outage. Regards, K. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Karl Auer (kauer@biplane.com.au) +61-2-64957160 (h) http://www.biplane.com.au/~kauer/ +61-428-957160 (mob) GPG fingerprint: B386 7819 B227 2961 8301 C5A9 2EBC 754B CD97 0156 Old fingerprint: 07F3 1DF9 9D45 8BCD 7DD5 00CE 4A44 6A03 F43A 7DEF