I wonder how exactly Taradata's set-up works. Let's forget about semi-automatic installation for now and focus on classic AutoYaST only. I assume that AutoYaST for initial installation only takes the network settings as come from Linuxrc and sets the ones from profile during 2nd stage.
The drop of 2nd stage is a fact - and so is a need to allow to configure multiple network interfaces for the first stage. Therefore I can see two options:
- add an option to the AutoYaST profile, which says clearly that network configuration should be set for the system, but not applied before reboot
- allow to set additional network configuration for 1st stage, which would be applied instantly, but not written to the system
The profile will not be 100% compatible, but we can quite easily document the need to add an option to keep network settings from Linuxrc during full 1st stage.