ifupdown-ng/executor-scripts/linux/static
Maximilian Wilhelm 5d6c7732ed static executor: Ignore errors while removing addresses
When having multiple addresses set from the same prefix they might/will(?)
  be configured as 'secondary' and implicitly removed when removing the
  non-secondary address. This leads ip complaining about not being able
  to remove the secondaries as they are already gone. So we ignore errors
  while deconfiguring addresses as they liked occur when removing a
  vanish address anyway.

Signed-off-by: Maximilian Wilhelm <max@sdn.clinic>
2020-10-06 04:50:02 +02:00

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#!/bin/sh
set -e
[ -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 ${IF_POINT_TO_POINT}"
else
PEER=""
fi
if [ -z "${MOCK}" -a "${1}" = "del" ]; then
# When having multiple addresses set from the same prefix they might/will(?) be configured
# as 'secondary' and implicitly removed when removing the non-secondary address. This
# leads ip complaining about not being able to remove the secondaries as they are already
# gone. So we ignore errors while deconfiguring addresses as they liked occur when removing
# a vanish address anyway.
${MOCK} ip "${addrfam}" addr "${1}" "${addr}" ${PEER} dev "${IFACE}" 2>/dev/null
else
${MOCK} ip "${addrfam}" addr "${1}" "${addr}" ${PEER} dev "${IFACE}"
fi
done
}
configure_gateways() {
for gw in ${IF_GATEWAYS}; do
addrfam=$(addr_family ${gw})
${MOCK} ip "${addrfam}" route "${1}" default via "${gw}" ${VRF_TABLE} ${METRIC} dev "${IFACE}"
done
}
case "$PHASE" in
up)
configure_addresses add
configure_gateways add
;;
down)
configure_gateways del
configure_addresses del
;;
*) exit 0 ;;
esac