Семён Марьясин authored May 31, 2020 and Jouke Witteveen committed Jun 26, 2020

When you call `netctl list`, it calls `systemctl status` for each of the
profiles. By default, `systemctl status` fetches the last log entries from the
journal, which is often a time-consuming operation. Additionally, the status
output is not meant for machine processing.

With dhcpcd 9, the rundir has moved. We follow this change and no longer
support older versions of dhcpcd.
While here, also support information only use on IPv6, which has been
possible with dhcpcd for quite a while already.

Reported by: Antonio Rojas <arojas@archlinux.org>

Also, make sure that netctl does not wait for the interface of a wireguard
connection, since that interface will be created by netctl itself.

Contributed by Thibaut Sautereau <thibaut@sautereau.fr>

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 same functionality is provided by wpa_supplicant, so we do not need
an extra and Arch Linux specific dependency.

When accept_ra is set to 1, router advertisements are still ignored if
the interface is in forwarding mode. For such configurations, the
interface should have a static configuration and netctl already sets
accept_ra to 0. Setting it to 2 otherwise forces the kernel to accept
router advertisements regardless of the forwarding setting.

Christoph Hoopmann authored Oct 17, 2018 and Jouke Witteveen committed Nov 15, 2018

Signed-off-by: Christoph Hoopmann <christophhoopmann@gmail.com>

Inside double quotes, backslash is an escape character. Hence, it is
cleaner to use single quotes where backslashes may occur. This includes
pattern strings for print, grep, and sed.

This also allows hooks to alter the profile to be loaded.

Hooks can now tell the command to be executed by looking at $Command.
The value will be "start", "stop", or "" (undefined), depending on the
reason a profile is being sourced.

On termination, pppd runs a script to restore resolve.conf to the state it was
in before pppd started. When we do not wait for the termination of pppd to
complete, systemd kills this script and resolve.conf is not restored.

Reported by KF <kecef@aol.com> in FS#53572

This covers some corner cases where, for instance, IFS does not contain
whitespace characters.

Reported by Michaël Cadilhac <michael@cadilhac.name>

According to hostnamectl(1), network configuration should only influence the
transient hostname.

Observed and reported by Stefan (steinwanderer).

A generated config file could be left behind.
This occurs for instance when a removable interface is removed when used
or when an interface is blocked by rfkill, but netctl is not instructed
to utilize its rfkill routines.

Turn "-L" into a default value of DhcpcdOption=, making it possible to forego
the parameter by setting the variable to an empty string.

DhcpcdOptions= is currently not documented. The last documentation read:
"Do not use this unless you know what you are doing."
When using this variable, "-L" now has to be added if its functionality is
desired.

Distinguish between started profiles and online profiles in the output
of the list subcommand of netctl.
To be consistent in symbol usage, the wifi-menu flags have changed too.

The netctl@ service now yields before obtaining an IP address. This
prevents holding up network.target unnecessarily. Waiting for profiles
to obtain an IP address is possible through

1) The netctl-wait-online service
This service waits until all enabled profiles have obtained an address.
It is ordered before network-online.target so that this target is now
correctly implemented in netctl.

2) The wait-online <PROFILE> subcommand to netctl
This command waits for a started profile to obtain an address.

This adds the LinkOptions= variable for use with connection types that
add interfaces (bond, bridge, dummy, macvlan, vlan). This variable is
not portable in the event of moving away from iproute2, so common
options should still get their own variables.

Bring the $Interface for pppoe connections ($BindsToInterfaces for ppp
connections) back down when pppd fails so that restarting pppoe
connections is possible.

There was a typo in the code that checked whether wpa_supplicant was
already terminated that made us try to kill a non-existing instance of
wpa_supplicant.

The ppp chat messages in mobile_ppp connections need to be customized
for some services/devices.

Based on a patch by:
Rohan Jain <crodjer@gmail.com>

As wpa_supplicant_scan outputs a filename to stdout, output from
wpa_start interferes if it goes to stdout too.

This bug was identified by:
Evangelos Foutras <evangelos@foutrelis.com>