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I am developing a web app that has to produce different output based on ip. For testing and during development it would help a lot if I could have more loopback ip addresses besides Is there a way to create (and latter destroy) these?

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2 Answers 2

up vote 1 down vote accepted

Edit /etc/network/interfaces

add the following at the bottom of the file

auto lo:1
iface lo:1 inet static

Documentation on interfaces file can be found here :

The definition above firstly tells the system to automatically bring the new lo:1 virtual interface up when the system starts. Then sets interface lo:1 (A virtual interface bound to the loopback interface) to be a static address. The last two lines set the address and the netmask.

After you have added the above you will need to restart networking

sudo /etc/init.d/networking restart

or reboot the computer.

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The whole address space is reserved for loopback addresses. So you can use any address from up to

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+1, good to know fact. However, I tried with my browser and I get (111) Connection refused error. So, I guess I should try the method @Sam suggests. – Majid Fouladpour Mar 3 '14 at 10:34

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