ssm-services/services/lo.iface

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#!/usr/bin/env ssm
cfg_iface="${service_name%%.*}"
service_type='oneshot'
service_command=( /usr/bin/ip link set "$cfg_iface" up )
ready() {
local iface="$1" timer='0' timeout='6'
until [[ "$(ip link show $iface up)" ]]; do
(( timer >= timeout )) && { return 1; }
(( timer++ ))
done
}
pre_stop() {
ip link set "${cfg_iface}" down
super_stop
}