#!/bin/sh
# This is a NetworkManager dispatcher script for chronyd to set its NTP sources
# online or offline when a network interface is configured or removed.

export LC_ALL=C

chronyc=/usr/bin/chronyc

# Consider only selected events
if [ $# -ge 2 ]; then
    case "$2" in
        up|down|connectivity-change)
            ;;
        dhcp4-change|dhcp6-change)
            # Actions "up" and "connectivity-change" in some cases do not
            # guarantee that the interface has a route (e.g. a bond).
            # dhcp(x)-change handles at least cases that use DHCP.
            ;;
        *)
            exit 0;;
    esac
else
    echo "NetworkManager dispatcher script missing arguments"
    exit 1
fi

$chronyc onoffline > /dev/null 2>&1

exit 0
