+copying to ram and booting it. Due to current limitations in busyboxs wget
+and DNS resolution, an URL can not contain a hostname but an IP only.
+
+Not working: http://example.com/path/to/your_filesystem.squashfs
+Working: http://1.2.3.4/path/to/your_filesystem.squashfs
+
+Also note that therefore it's currently not possible to fetch an image from a
+namebased virtualhost of an httpd if it is sharing the ip with the main httpd
+instance.