core-agent-linux/network/udev-qubes-network.rules

# old udev has ENV{ID_NET_DRIVER}
SUBSYSTEMS=="xen", KERNEL=="eth*", ACTION=="add", ENV{ID_NET_DRIVER}=="vif", ENV{SYSTEMD_WANTS}+="qubes-network-uplink@%k.service"
SUBSYSTEMS=="net", KERNEL=="eth*", ACTION=="remove", ENV{ID_NET_DRIVER}=="vif", ENV{SYSTEMD_WANTS}+="qubes-network-uplink@%k.service"
# new udev has DRIVERS
SUBSYSTEMS=="xen", KERNEL=="eth*", ACTION=="add", DRIVERS=="vif", ENV{SYSTEMD_WANTS}+="qubes-network-uplink@%k.service"