ifupdown-ng/executor-scripts/linux/static
Ariadne Conill aee2d45e18 static: use ip addr|route flush instead of manually deleting matching routes
This ensures we wind up with a clean slate for the interface or VRF when taking
interfaces/VRFs down.

Closes #149.
2021-04-22 01:43:12 -06:00

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#!/bin/sh
[ -z "${VERBOSE}" ] || set -x
[ -z "${IF_METRIC}" ] && IF_METRIC="1"
[ -n "${IF_VRF_TABLE}" ] && VRF_TABLE="table ${IF_VRF_TABLE}"
[ -n "${IF_VRF_MEMBER}" ] && VRF_TABLE="vrf ${IF_VRF_MEMBER}"
[ -n "${IF_METRIC}" ] && METRIC="metric ${IF_METRIC}"
addr_family() {
if [ "$1" != "${1#*[0-9].[0-9]}" ]; then
echo "-4"
elif [ "$1" != "${1#*:[0-9a-fA-F]}" ]; then
echo "-6"
else
exit 1
fi
}
configure_addresses() {
for addr in ${IF_ADDRESSES}; do
addrfam=$(addr_family ${addr})
if [ "${IF_POINT_TO_POINT}" -a "${addrfam}" = "-4" ]; then
PEER="peer ${IF_POINT_TO_POINT}"
else
PEER=""
fi
${MOCK} ip "${addrfam}" addr add "${addr}" ${PEER} dev "${IFACE}"
done
}
configure_gateways() {
for gw in ${IF_GATEWAYS}; do
addrfam=$(addr_family ${gw})
${MOCK} ip "${addrfam}" route add default via "${gw}" ${VRF_TABLE} ${METRIC} dev "${IFACE}"
done
}
flush() {
cmd="addr"
arg="dev ${IFACE}"
${MOCK} ip ${cmd} flush ${arg}
}
case "$PHASE" in
up)
configure_addresses add
configure_gateways add
;;
down)
flush
;;
*) exit 0 ;;
esac