Am 29.08.2013 15:53, schrieb Neil Horman:
> you can use the ip utility to create dummy network devices on top of your
> loopback device, but the better question is - why?  Having multiple clients 
> and
> servers on a single system doesn't in any way require multiple loopback
> interfaces.  just have the servers and clients all listen on, and connect to
> 127.0.0.1, and assign each server a separate port number.
that does not help you much in case as example a multi-postfix-installation
when the software is not interested in using a different port and you
want simulate real world by different IP's, binding services to specific
ones and work with *hostnames* via /etc/hosts

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