IPv6 could change things - Was: DMCA takedowns of networks

Tue Oct 27 14:32:09 UTC 2009

Jeffrey Ollie wrote:
[..]
> But do the commonly-used operating systems support adding hundreds or
> thousands of addresses to an interface, and what would the performance
> implications be?

Remember that IP addresses are 128bits, while hostnames (the ones for
the "Host:" header in the HTTP query) are well, quite a bit longer than
that on average.

If thus something like this would become common-place, there definitely
will be quite some people who will be paying some attention on
optimizing Apache.

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 ;)

Greets,
 Jeroen

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