/etc/NetworkManager/dispatcher.d/01ifupdown is in network-manager 1.2.6-0ubuntu0.16.04.3.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 | #!/bin/sh -e
# Script to dispatch NetworkManager events
#
# Runs ifupdown scripts when NetworkManager fiddles with interfaces.
# See NetworkManager(8) for further documentation of the dispatcher events.
if [ -z "$1" ]; then
echo "$0: called with no interface" 1>&2
exit 1;
fi
if [ -n "$IP4_NUM_ADDRESSES" ] && [ "$IP4_NUM_ADDRESSES" -gt 0 ]; then
ADDRESS_FAMILIES="$ADDRESS_FAMILIES inet"
fi
if [ -n "$IP6_NUM_ADDRESSES" ] && [ "$IP6_NUM_ADDRESSES" -gt 0 ]; then
ADDRESS_FAMILIES="$ADDRESS_FAMILIES inet6"
fi
# If we have a VPN connection ignore the underlying IP address(es)
if [ "$2" = "vpn-up" ] || [ "$2" = "vpn-down" ]; then
ADDRESS_FAMILIES=""
fi
if [ -n "$VPN_IP4_NUM_ADDRESSES" ] && [ "$VPN_IP4_NUM_ADDRESSES" -gt 0 ]; then
ADDRESS_FAMILIES="$ADDRESS_FAMILIES inet"
fi
if [ -n "$VPN_IP6_NUM_ADDRESSES" ] && [ "$VPN_IP6_NUM_ADDRESSES" -gt 0 ]; then
ADDRESS_FAMILIES="$ADDRESS_FAMILIES inet6"
fi
# We're probably bringing the interface down.
[ -n "$ADDRESS_FAMILIES" ] || ADDRESS_FAMILIES="inet"
# Fake ifupdown environment
export IFACE="$1"
export LOGICAL="$1"
export METHOD="NetworkManager"
export VERBOSITY="0"
for i in $ADDRESS_FAMILIES; do
export ADDRFAM="$i"
# Run the right scripts
case "$2" in
up|vpn-up)
export MODE="start"
export PHASE="post-up"
run-parts /etc/network/if-up.d
;;
down|vpn-down)
export MODE="stop"
export PHASE="post-down"
run-parts /etc/network/if-post-down.d
;;
# pre-up/pre-down not implemented. See
# https://bugzilla.gnome.org/show_bug.cgi?id=387832
# pre-up)
# export MODE="start"
# export PHASE="pre-up"
# run-parts /etc/network/if-pre-up.d
# ;;
# pre-down)
# export MODE="stop"
# export PHASE="pre-down"
# run-parts /etc/network/if-down.d
# ;;
hostname|dhcp4-change|dhcp6-change)
# Do nothing
;;
*)
echo "$0: called with unknown action \`$2'" 1>&2
exit 1
;;
esac
done
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