最近我发现我的一台Ubuntu18.04的机器不能正常的进行WakeOnLAN了，回想之前是Ubuntu16.04的时候还是正常的，猜想是因为系统设置的问题，于是乎求助google，进行了一番搜索后找到了如下的解决方法：
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| root@dev-star:~# apt-get install ethtool
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建立开机启动服务
在/etc/systemd/system中建立wol@.service
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| root@dev-star:/opt# cd ~
root@dev-star:~# cat /etc/systemd/system/wol\@.service
[Unit]
Description=Wake-on-LAN for %i
Requires=network.target
After=network.target
[Service]
ExecStart=/sbin/ethtool -s %i wol g
Type=oneshot
[Install]
WantedBy=multi-user.target
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enable开机启动项
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| root@dev-star:~# systemctl enable wol@enp3s0
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重启后检查
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| root@dev-star:~# ethtool enp3s0
Settings for enp3s0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Link partner advertised pause frame use: Symmetric Receive-only
Link partner advertised auto-negotiation: Yes
Link partner advertised FEC modes: Not reported
Speed: 1000Mb/s
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: g #这里是g表示已经成功了
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: yes
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经过这一番操作，在系统关机后依然可以使用wakeonlan唤醒机器了。