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On linux boxes it is possible to add multiple ip addresses to the same network interface.

It's achived with the following command:

ip addr add dev eth0

Is there any way to to the same with OS X ?

I've tried to put multiple ip addresses (comma separated like the dns) in System Preferences / Network with no luck...

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up vote 9 down vote accepted

Yeah, it's pretty easy. Open the System Preferences, go to Networking, then click the Plus sign under the left bar. Choose the interface, give a name to the adapter configuration you're creating, then press OK and deal with it as you would like to. Click Apply when you're done, and enjoy. Your adapter now has two IP addresses.

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