It works. Try this on Xavier:
# Get the mac address of Xavier's wired ethernet controler and copy it
<s>ifconfig eth0 |grep ether| tr -s " " | cut -d' ' -f3</s>
ifconfig eth0 | grep -i ether | tr ' ' '\n' | egrep -A1 "ether|HWaddr"
# Enable WOL for eth0
sudo ethtool -s eth0 wol g
# Put Xavier in suspend mode
sudo systemctl suspend
Then on host (assuming a an Ubuntu host):
#install wakeonlan:
sudo apt-get install wakeonlan
# Now wakeup your Xavier providing its mac address:
wakeonlan xx:xx:xx:xx:xx:xx
[EDIT: depending on your network you may have to set -i :
wakeonlan -i <broadcast-address> <mac-address>
]