Linux Wake-On-LAN (Ubuntu 20.04)

$ sudo ethtool enp2s0 | grep Wake-on
        Supports Wake-on: pumbg
        Wake-on: d

$ cat /etc/netplan/00-installer-config.yaml

# This is the network config written by 'subiquity'
network:
  ethernets:
    enp2s0:
      dhcp4: true
    enp4s0:
      dhcp4: true
  version: 2

$ cat /etc/netplan/00-installer-config.yaml

# This is the network config written by 'subiquity'
network:
  ethernets:
    enp2s0:
      match:
        macaddress: ここにMACアドレス
      dhcp4: true
      wakeonlan: true
    enp4s0:
      dhcp4: true
  version: 2

$ sudo netplan --debug generate
$ sudo netplan apply

$ sudo ethtool enp2s0 | grep Wake-on
        Supports Wake-on: pumbg
        Wake-on: g

$ sudo systemctl suspend

$ sudo crontab -e

00 01 * * * /usr/bin/systemctl suspend