Connection types bond, bridge, dummy, vlan, and macvlan create their own
interface. Previously, only macvlan offered control over the MAC address of
the created interface. Now, this functionality is available to all these
connection types.

Thanks to:
Javier <j.e.vasquez.v@gmail.com>
and
David Hummel <hummeltech@dhummel.net>

The following changes introduced in Bash 4.3 necessitate this commit:
- Setting the array attribute no longer initializes an array.
- Empty-but-set arrays no longer pass [[ -v ]].

Previous attempts:
feb669f4
711c4645
e8210827

ajs124_desk authored Mar 01, 2014 and Jouke Witteveen committed Mar 01, 2014

Ifenslave is deprecated according to the kernel documentation:
https://www.kernel.org/doc/Documentation/networking/bonding.txt
It also added an additional, unnecessary dependency. I tried to update
the documentation to reflect this change.

The main benefit is the possibility to use interface hooks for links
that are created at runtime.

Now a bit more verbose when useful.

The declare builtin defaults to making variables local.

Previous attempts:
711c4645
e8210827

When interpreted as an array, the empty string represents a 1-element
array consisting of the empty string. This is actually very reasonable.

Reported by: Thomas Bächler <thomas@archlinux.org>

This allows connection scripts to provide defaults, among other things.

Remove distribution-specific paths (and allow overrides).

This commit contains the refactoring and rewriting of code.

This commit contains the moving of files.

This commit removes an undocumented feature where IFACE_{UP,DOWN} would
be evaluated when the interface is brought up or down.
This functionality did not work as expected since the interface could
potentially be brought up/down more than once in one netcfg invocation.
This is apparent in the changes to the bonding code.

- make specifying IP optional for tuntap profiles (FS#30638)
- ethernet_{up,down} takes care of bring_interface {up,down}
- debugging updates: don't hide errors, they are useful

This is what you get when Dave Reisner points you at some bash anti-patterns.
Also in this commit:
- updated documentation
- bugfix revision of the IPv6 SLAAC address/route bug

Signed-off-by: Rémy Oudompheng <remy@archlinux.org>

Contributed-by: Byron Williams <byron@112percent.com>
Signed-off-by: Rémy Oudompheng <remy@archlinux.org>