install 32Bit-packages on 64Bit-system failed

[Sabine Schmidt]

Hello,

is it correct, that a nfsroot for Ubuntu precise 64Bit-architecture 
cannot install packages for 32Bit-achitecture? Our nfsroot don't find 
32Bit-packages in the repository, only 64Bit-packages.
The command 'uptitude update' fetch only the 64Bit-packages. And I get 
the error message "No candidate  version found for <package>".

If I run the command 'aptitude update' outside the nfsroot, the 
32Bit-packages are fetched too. And I can install this packages too.

What can I do, so that 32Bit-packages are installed during the 
fai-installation?

Thanks for your answers.
Regards,
Sabine