deprecate: sudo service networking restart / sudo /etc/init.d/networking restart

[Chris J Arges]

In the Server Guide documentation let's ensure that we aren't suggesting to use:
- 'sudo service networking restart'
- 'sudo /etc/init.d/networking restart'

The usage of these for Precise and beyond is deprecated and dangerous, for example:
https://bugs.launchpad.net/bugs/1072518

I've seen on example here at least, but it may useful to search for other cases of this as well:
https://help.ubuntu.com/12.04/serverguide/network-configuration.html

[Chris J Arges (arges)]

The following doc:
https://help.ubuntu.com/14.04/serverguide/network-configuration.html
Shows bringing interfaces down and up correctly.

The recommend way is to use 'ifup' and 'ifdown' to bring specific interfaces up and down.

[Doug Smythies (dsmythies)]

For 14.04, this was fixed. I have not yet found the duplicate bug report, but I think there is one.

Reference (preliminary US-English only 14.04 published just a few hours ago):
https://help.ubuntu.com/14.04/serverguide/network-configuration.html

[Doug Smythies (dsmythies)]

For trusty reference:
http://bazaar.launchpad.net/~ubuntu-core-doc/serverguide/trusty/revision/171
from the MP: #195112 by Stephanie Graber