openwrt-packages-dist/net/mwan3/files/etc/mwan3.user

#!/bin/sh
#
# This file is interpreted as shell script.
# Put your custom mwan3 action here, they will
# be executed with each netifd hotplug interface event
# on interfaces for which mwan3 is enabled.
#
# There are three main environment variables that are passed to this script.
#
# $ACTION	Either "ifup" or "ifdown"
# $INTERFACE	Name of the interface which went up or down (e.g. "wan" or "wwan")
# $DEVICE	Physical device name which interface went up or down (e.g. "eth0" or "wwan0")