I have a MSI Z370-A PRO Motherboard with a Realtek RTL8111H. After upgrading to 6.7 WOL stopped working. The "ethtool -s eth0 wol g" command temporarily fixed the issue, would work with sleep wake cycles but rebooting the system brought the WOL problem back.
driver: r8169
version:
firmware-version: rtl8168h-2_0.0.2 02/26/15
expansion-rom-version:
bus-info: 0000:02:00.0
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: yes
supports-priv-flags: no