netctl

netctl is a CLI-based tool used to configure and manage network connections via profiles. It is a native Arch Linux project for network configuration.

https://wiki.archlinux.org/index.php/Netctl

Problems with netctl-auto on resume

Sometimes netctl-auto fails to reconnect when the system resumes from suspend. An easy solution is to restart the service for netctl-auto. This can be automated with an additional service like the following:

/etc/systemd/system/netctl-auto-resume@.service

[Unit]
Description=restart netctl-auto on resume.
Requisite=netctl-auto@%i.service
After=suspend.target

[Service]
Type=oneshot
ExecStart=/usr/bin/systemctl restart netctl-auto@%i.service

[Install]
WantedBy=suspend.target

To enable this service for your wireless card, for example, run systemctl enable netctl-auto-resume@wlan0.service as root. Change wlan0 to the required network interface.

netctl

原文：http://www.cnblogs.com/zym0805/p/4314465.html