Testing netinstall, but use stable release?

[Rory Campbell-Lange <rory@campbell-lange.net>]

I'm setting up some servers with A2SDi-8C-HLN4F motherboards with Intel
x553 cards that require the ixgbe kernel module.

The latest stable netinstall image allows one to load the ixgbe module
but the network interfaces aren't seen. However, the latest testing
netinstall sees the network interfaces fine.

Is there a clever way of downgrading the installation to stable while
keeping the testing kernel and associated ixgbe module?

Rory