Enable wake on lan on Proxmox

Edit /etc/network/interfaces and add post-uup /sbin/ethtool -s enp6s0 wol g (important to check if ethtool is installed on system $which ethtool)

auto vmbr0
iface vmbr0 inet static
        address 192.168.3.10/23
        gateway 192.168.2.1
        bridge-ports enp6s0
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4094
        post-up /sbin/ethtool -s enp6s0 wol g