PREUN

/bin/sh

if [ $1 -eq 0 ]; then
    # Package removal, not upgrade
    /bin/systemctl --no-reload disable conntrackd.service > /dev/null 2>&1 || :
    /bin/systemctl stop conntrackd.service > /dev/null 2>&1 || :
fi

POSTUN

/bin/sh

/bin/systemctl daemon-reload >/dev/null 2>&1 || :
if [ $1 -ge 1 ] ; then
    # Package upgrade, not uninstall
    /bin/systemctl try-restart conntrackd.service >/dev/null 2>&1 || :
fi