nanog mailing list archives
Re: Where to buy Internet IP addresses
From: Carsten Bormann <cabo () tzi org>
Date: Wed, 6 May 2009 07:12:42 +0200
Sure, but how does the router know it needs to hand out a /62? Then what about the router after that? Does it hand out a /61? then the router behind that?
For now: Reserve a /64 for your own allocations (SAA), then hand out half of what you have (i.e., of a /56 for the first CPE, so a /57) to the first asker, then a /58, then a /59 etc. The first asker (nested CPE) has a /57, reserves a /64 for itself (SAA), hands out a /58 to its first child (double-nested CPE), then a /59. This algorithm restricts width plus depth to 8 (64 - 56), which is probably fine for most residential applications.
The probabilistic aspect (FCFS) may cause you cognitive dissonance, but little technical problem. (Something that could be said about many of the "I grew up on IPv4 so I don't understand IPv6" postings here.)
What if the ISP only gave a /60?
Don't do that then! (http://www.jargondb.org/glossary/dont-do-that-then) Really, /56 for everyone is the only way back to an Internet. Gruesse, Carsten
Current thread:
- Re: Where to buy Internet IP addresses, (continued)
- Re: Where to buy Internet IP addresses Mikael Abrahamsson (May 04)
- Re: Where to buy Internet IP addresses Jack Bates (May 04)
- Re: Where to buy Internet IP addresses Joe Maimon (May 05)
- Re: Where to buy Internet IP addresses Joe Greco (May 05)
- Re: Where to buy Internet IP addresses Jack Bates (May 05)
- Re: Where to buy Internet IP addresses Mikael Abrahamsson (May 05)
- Re: Where to buy Internet IP addresses Jack Bates (May 05)
- Re: Where to buy Internet IP addresses Mikael Abrahamsson (May 05)
- DHCPv6 PD David W. Hankins (May 05)
- Re: Where to buy Internet IP addresses Stephen Sprunk (May 05)
- Re: Where to buy Internet IP addresses Carsten Bormann (May 05)
- Re: Where to buy Internet IP addresses Karl Auer (May 05)
- Re: Where to buy Internet IP addresses Mikael Abrahamsson (May 05)
- Re: Where to buy Internet IP addresses Karl Auer (May 05)
- Re: Where to buy Internet IP addresses Jack Bates (May 06)
- Re: Where to buy Internet IP addresses Carsten Bormann (May 06)
- RE: Where to buy Internet IP addresses david.binet (May 06)
- Re: Where to buy Internet IP addresses Paul Timmins (May 05)
- DHCPv6 PD chains vs bridging David W. Hankins (May 05)
- Re: DHCPv6 PD chains vs bridging Durand, Alain (May 05)
- Re: DHCPv6 PD chains vs bridging Charles Wyble (May 05)