On Tue, 27 Oct 2009 10:41:46 -0500 Jack Bates <jba...@brightok.net> wrote:
> Jeroen Massar wrote: > > But yes, the network stack itself is a different question, then again, > > you can just route a /64 into the loopback device and let your apache > > listen there... (which also allows you to do easy-failover as you can > > move that complete /64 to a different box ;) > > > > You are still comparing an application level decision to a stack level > decision. Thousands of addresses on a stack could definitely pose an > issue depending on the OS. > Depends a bit on how the OS handles interface address assignments. Linux creates host routes in a separate 'local' route table, which you can see via ip route show table local or for IPv6 ip -6 route show table local which I think would suggest that Linux's interface address assignment scalability is as scalable as it's route table scalability. Performing concurrent IPv6 Duplicate Address Detection on that many addresses when the interface/host comes up might be an issue. Regards, Mark.