[Unit]
# Some other units may require a fully configured tap interface before started.
# Before=dnsmasq.service

[Service]
# Command to use to configure your tap interface. %i refers to the instance, and thus the device being configured.
# It is allowed to have multiple ExecStart= entries, as long as they exit when done. (So no daemons!)
ExecStart=/bin/ifconfig %i $%i_IFCONFIG_OPTS
# ExecStart=/sbin/brctl addif br0 %i

# If you want to specify a separete command for a certain instance, use /etc/systemd/system/vde-tap-config@<instance>.service.d/<foo>.config

# Settings to use for your command. This sets an IP and a fixed MAC Address
Environment="qemu_IFCONFIG_OPTS=10.0.0.1/24 hw ether 8e:8b:d4:fe:d9:b1 up"