Forcing static address in 12.04

[Tom H]

On Tue, Jun 9, 2015 at 6:15 PM, Linda <haniganwork at earthlink.net> wrote:
>
> You can not set /etc/network/interfaces manually if NM is used as it over
> writes the file. Don't remember why I couldn't use NM for Ubuntu 10 my notes
> show I could use NM for 12 so no longer needed to do that.
> Sorry it didn't help. If you have a DVD for the version you are using you
> could try and reinstall NM using the deb files from the DVD.

I've never come across NM overwriting "/etc/network/interfaces"!

By default, NM ignores an interface that's defined in "/etc/network/interfaces".

The NM ifupdown plugin enables NM to control non-lo interfaces defined
in "/etc/network/interfaces" if:

- if the "[main]" section of "/etc/NetworkManager/NetworkManager.conf"
has "plugins=...,ifupdown,..."

- if the "[ifupdown]" section of
"/etc/NetworkManager/NetworkManager.conf" has "managed=true".