case $reason in
    BOUND|RENEW|REBIND|REBOOT)
        if [ -n "$new_minigraph_url" ]; then
            echo $new_minigraph_url > /tmp/dhcp_graph_url
        else
            echo "N/A" > /tmp/dhcp_graph_url
        fi
        if [ -n "$new_acl_url" ]; then
            echo $new_acl_url > /tmp/dhcp_acl_url
        fi
        ;;
esac