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#! /bin/sh
# Reload the OpenSSH server when an interface comes up, to allow it to start
# listening on new addresses.
set -e
# Don't bother to restart sshd when lo is configured.
if [ "$IFACE" = lo ]; then
exit 0
fi
# Only run from ifup.
if [ "$MODE" != start ]; then
exit 0
fi
# OpenSSH only cares about inet and inet6. Get ye gone, strange people
# still using ipx.
if [ "$ADDRFAM" != inet ] && [ "$ADDRFAM" != inet6 ]; then
exit 0
fi
# Is /usr mounted?
if [ ! -e /usr/sbin/sshd ]; then
exit 0
fi
if [ ! -f /var/run/sshd.pid ] || \
[ "$(ps -p "$(cat /var/run/sshd.pid)" -o comm=)" != sshd ]; then
exit 0
fi
# We'd like to use 'reload' here, but it has some problems; see #502444. On
# the other hand, repeated restarts of ssh make systemd unhappy
# (#756547/#757822), so use reload in that case.
if [ -d /run/systemd/system ]; then
action=reload
else
action=restart
fi
invoke-rc.d ssh $action >/dev/null 2>&1 || true
exit 0
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