Florian Pritz wrote:
Meet netctl: a profile based networking CLI using systemd. In the near future, the old netcfg will be removed from [core]. Anyone using it is urged to move to netctl. Migration is a manual process during which you might not have access to the Internet, so take care and read the man pages (netctl(1), netctl.profile(5) and netctl.special(7)).
The design of netctl is so that systemd enthusiasts will appreciate its usage and netcfg users will be familiar with its profile files. Shipped with netctl comes a ncurses-based wifi connection assistant called wifi-menu.
As you install netctl, netcfg will be removed, but the enabled systemd services will remain until manually disabled. The [netctl wiki] holds some additional information on migrating from netcfg.