When you use ethtool to change the Wake-On-LAN (WoL) setting of a NIC, the setting might be reset to Wake on MagicPacket (g) mode. This occurs when you perform any one of the following actions:
- Unplug the NIC cable.
- Plug the NIC cable.
- Change the speed setting of the NIC.
- Change the duplex setting of the NIC.
- Change the auto-negotiation setting of the NIC.
- Change other NIC settings from esxcfg-nics or ethtool commands.
The output might look similar to the following:
~ # ethtool vmnic2
Settings for vmnic2:
....
Supports Wake-on: pumbg
Wake-on: g
....