nanog mailing list archives

Re: Using IPv6 with prefixes shorter than a /64 on a LAN


From: "Ricky Beam" <jfbeam () gmail com>
Date: Tue, 25 Jan 2011 16:32:59 -0500

On Tue, 25 Jan 2011 13:42:29 -0500, Owen DeLong <owen () delong com> wrote:
Seriously? Repetitively sweeping a /64? Let's do the math...
...

We've had this discussion before...

If the site is using SLAAC, then that 64bit target is effectively 48bits. And I can make a reasonable guess at 24 of those bits. (esp. if I've seen the address of even one of the machines.)

--Ricky


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