specifying media URL for addon products

Hi,

I have a problem to specify the right media URL's for YUM repositories which are located on ISO images.
Environment: virtual machine ESX
- first cdrom: customized boot.iso
- second cdrom: iso with YUM repositories (patches for SLES)
- third cdrom: iso with original SLES11SP3 installation media

boot prompt: install=cd:/?device=/dev/disk-by-label/SLES* autoyast=...


addon-section points to cdrom with YUM repos:
<media_url><![CDATA[cd:/sles11sp3_up/?device=/dev/disk/by-label/FPL-*]]></media_url>

The result is that the installation process finds the correct installation media but cannot find the
addon medias.

The weird thing is when pointing the installation media to http://somewhere/sles11sp3
the addon product section works as expected - all installation sources are shown and used.

But as soon as I specify the installation media from cdrom the addon products will not be found anymore.

Could someone please point me to the error or provide the right specification?


Thanks,
Jochen