Wake on LAN in Ubuntu

Enable Wake on LAN flag for interface enp1s0 on boot. Prerequisite: sudo apt-get install ethtool

/etc/systemd/system/wol.service:

[Unit]
Description=Configure Wake-up on LAN

[Service]
Type=oneshot
ExecStart=/sbin/ethtool -s enp1s0 wol g

[Install]
WantedBy=basic.target

systemctl daemon-reload && systemctl enable wol.service && systemctl start wol.service

Source