I need to used multiple loopback addresses (interfaces) for an server application that communicates with multiple clients running on the same machine. Since a loopback interface short circuits the network stack (looping back in the IP layer) it is a more efficient means of communication, hence better for my purpose.

How do I define multiple loopback interfaces?

BTW, I'm a newbie to this mailing mailing list. Hopefully this is an appropriate question? --- John Chludzinski john-chludzinski(a)myopera.com

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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