nanog mailing list archives
Re: Using IPv6 with prefixes shorter than a /64 on a LAN
From: Mark Andrews <marka () isc org>
Date: Sat, 05 Feb 2011 10:11:34 +1100
In message <4D4C0D25.70408 () brightok net>, Jack Bates writes:
On 2/4/2011 5:03 AM, Eugen Leitl wrote:Given http://weblog.chrisgrundemann.com/index.php/2009/how-much-ipv6-is-there/it is pretty clear the allocation algorithms have to change, or the resourceis just as finite as the one we ran out yesterday.That's not what the author says. It says, IPv6 is only somewherein the range of 16 million to 17 billion times larger than IPv4.
And the author gets it wrong.
Let's be realistic. A /32 (standard small ISP) is equiv to an IPv4 single IP.
No, a /48 is equivalent to a single IP. You loose a little bit with small ISPs as their minimum is a /32 and supports up to 64000 customers. The bigger ISPs don't get to waste addresses space. And if a small ISP is getting space from a big ISP it also needs to maintain good usage ratios.
A /28 (medium ISP) is equiv to an IPv4 /28. A /24 (high medium, large ISP) is equiv to an IPv4 /24. A /16 (a huge ISP) is equiv to an IPv4 /16. Get the picture? So, I currently route a /16 worth of deaggregated IPv4 address space (sorry, allocation policy fault, not mine). There is NEVER a time that I will be allocated an IPv6 /16 from ARIN. Heck, the most I'll ever hope for is the current proposal's nibble boundary which might get me to a /24. I'll never talk to ARIN again after that. Jack
-- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka () isc org
Current thread:
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN, (continued)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Owen DeLong (Feb 01)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Fernando Gont (Feb 02)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Rob Evans (Feb 03)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Fernando Gont (Feb 03)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN George Herbert (Feb 03)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Eugen Leitl (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jack Bates (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN bmanning (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jack Bates (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Owen DeLong (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Mark Andrews (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jack Bates (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Mark Andrews (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jack Bates (Feb 04)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Mark Andrews (Feb 05)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jack Bates (Feb 05)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Mark Andrews (Feb 05)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jack Bates (Feb 05)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Mark Andrews (Feb 05)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jack Bates (Feb 05)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Mark Andrews (Feb 05)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Rob Evans (Feb 03)