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SubjectRe: "Super" IP aliases?

The 'correct' way to do this is with iproute2:

/sbin/ip addr add 10.20.30.0/24 dev eth0

On Tue, 21 Mar 2000, Scott Doty wrote:

> On Tue, Mar 21, 2000 at 12:06:17PM -0800, Scott Doty wrote:
> > I have a need to run thousands of IP addresses on one host. (It's
> > running apache.)
>
> I figured out how to do this. Linux 2.2 loopback interfaces are
> visible to the net. So:
>
> /sbin/ifconfig lo:0 10.20.30.1 netmask 255.255.255.0 mtu 1500 up
>
> This serves the entire 10.20.30.0/24 network, replacing 254 discrete
> interfaces. Thank you, O Linux gurus, for making this possible.
>
> Incidentally, I've received a few emails asking why we're not
> using name-based virtual hosts. The short answer is a) some
> browsers don't send a "Host:" header; and b) our systems are set
> up for IP hosts, which would be a pain to change.
>
> -Scott
> p.s. er...just in case it's only an accident that loopback aliases
> work the way they do: I'd like to register a formal grovel that
> their useful behavior remain in Linux. Indeed, this is one
> feature that blows the doors off of NT...
> /sd
>
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