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-the re/ it is pretty clear the allocation algorithms have to change, or the resourc e is 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