One more thing:
pls have in mind I am still testing, and with this file I only pretend to use the whole default.xml (http://10.7.5.100/autoinstall/rules/default.xml) but it doesn't work. By the way, default.xml is a complete, valid and working control file, that has been previously tested in a "autoyast=http://10.7.5.100/autoinstall/default.xml" installation.
Is default.xml in the autoinstall directory or in the autoinstall/rules directory? If it is the latter then your rule should say so:
<rule> <mac> <match>*</match> <match_type>exact</match_type> </mac> <result> <profile>rules/default.xml</profile> <continue config:type="boolean">true</continue> </result> </rule>
that is, the profile is relative to the autoinstall directory.