Current File : //etc/udev/rules.d/90-cloud-init-hook-hotplug.rules

# Installed by cloud-init due to network hotplug userdata
ACTION!="add|remove", GOTO="cloudinit_end"

ENV{ID_NET_DRIVER}=="vif|ena|ixgbevf", GOTO="cloudinit_hook"
GOTO="cloudinit_end"

LABEL="cloudinit_hook"
SUBSYSTEM=="net", RUN+="/usr/lib/cloud-init/hook-hotplug"
LABEL="cloudinit_end"