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

Ricky Beam jfbeam at gmail.com
Tue Jan 25 15:32:59 CST 2011


On Tue, 25 Jan 2011 13:42:29 -0500, Owen DeLong <owen at 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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