[118702] in North American Network Operators' Group
Re: IPv6 could change things - Was: DMCA takedowns of networks
daemon@ATHENA.MIT.EDU (Adrian Chadd)
Tue Oct 27 10:40:33 2009
Date: Tue, 27 Oct 2009 22:39:52 +0800
From: Adrian Chadd <adrian@creative.net.au>
To: Jeroen Massar <jeroen@unfix.org>
In-Reply-To: <4AE70469.4000201@spaghetti.zurich.ibm.com>
Cc: North American Network Operators Group <nanog@merit.edu>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Tue, Oct 27, 2009, 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 ;)
Funny you should mention that.
A couple of tricks I've seen:
* instead of a linked list and O(n) searching of interface aliases, use
some kind of tree to map local IP -> interface.
* hacks to do a "bind to all damned IP addresses and let userspace sort
it out".
I've done the former for a few thousand aliases with no degredation
in performance. The hacks available for freebsd-4.x for the Web Polygraph
software did something similar.
2c,
Adrian
