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#!/bin/sh
#
# Maximilian Wilhelm <max@sdn.clinic>
# -- Thu, 17 Dec 2020 03:02:10 +0100
#
# This executor is responsible for setting up MPLS decapsulation on a given interface.
#
# See interfaces-mpls(5) for a list of supported options.
#
yesno() {
case "$1" in
yes|1) echo 1 ;;
*) echo 0 ;;
esac
}
[ -z "$VERBOSE" ] || set -x
# We only operate in pre-up phase
[ "$PHASE" != "pre-up" ] && exit 0
if [ "$IF_MPLS_ENABLE" ]; then
value=$(yesno $IF_MPLS_ENABLE)
# Load mpls module if we should enable MPLS decap on (at least) one interface
if [ "${value}" = 1 ]; then
${MOCK} modprobe mpls_iptunnel
fi
# If MPLS support isn't loaded and we are not MOCKing, carry on
if [ -f "/proc/sys/net/mpls/conf/$IFACE/input" -o "${MOCK}" ]; then
${MOCK} /bin/sh -c "echo ${value} > /proc/sys/net/mpls/conf/$IFACE/input"
fi
fi
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