I figured this should go here as well. ----- Forwarded message from Eugen Leitl <eugen@leitl.org> ----- From: Eugen Leitl <eugen@leitl.org> Date: Sat, 13 Nov 2010 16:32:25 +0100 To: ipv6-ops@lists.cluenet.de Subject: Re: Linux source address selection vs. EUI-64 User-Agent: Mutt/1.5.18 (2008-05-17) On Sat, Nov 13, 2010 at 03:36:57PM +0100, Geert Hendrickx wrote: > For individual hosts (esp. in a VPS environment), assigning a /64 or > larger makes little sense to me, a /96 is more than enough. Is that an official recommendation? I currently have a single /56, which I would like to distribute over several thousands customers, each on a virtual server, with currently one static IPv4 address. I can see how a /96 for each customer would be more than enough (especially that since hundreds of customers are going to share the same MAC, due to the low-overhead virtualization technology used). Presumably, in above context it would be a sane thing to parcel the /56 into /64, each for one physical server's distinct NIC MAC, and from each /64 a /96 for each virtual server? -- Eugen* Leitl <a href="leitlhttp://leitl.org">leitl</a> http://leitl.org ______________________________________________________________ ICBM: 48.07100, 11.36820 http://www.ativel.com http://postbiota.org 8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE ----- End forwarded message ----- -- Eugen* Leitl <a href="leitlhttp://leitl.org">leitl</a> http://leitl.org ______________________________________________________________ ICBM: 48.07100, 11.36820 http://www.ativel.com http://postbiota.org 8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE