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Can I configure a network interface (eth0, eth1, etc.) to be down by default, but still be available?

I would like my eth0 interface to be "down" after a fresh boot. With the option of using ifup eth0 from the command line to bring it up later.

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Is this on a system with or without network manager? – Oli Apr 12 '13 at 14:19
ubuntu server 12.04, without network manager – Corey Apr 12 '13 at 15:11
up vote 3 down vote accepted

/etc/network/interfaces is repsonsible for getting it up.

Comment out auto eth0 (add a # in front of it) and it will not start on boot.

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Can I still use "ifup eth0" at the command prompt? – Corey Apr 12 '13 at 15:12
Yes of course! That was the whole idea ;) 1 thing: if this does not work networkmanager might be interfering (but I assume you are using a server and not a server with a desktop) – Rinzwind Apr 12 '13 at 17:22
Thanks, that worked perfectly! – Corey Apr 12 '13 at 17:30
Gratz! and thanks for the upvote – Rinzwind Apr 12 '13 at 17:32

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