The prerequisite for installing Brother's official linux drivers includes ia32-libs or lib32stdc++. Running sudo apt-get install ia32-libs on 13.04 and earlier fulfils this. However, ia32-libs was removed in 13.10. Running sudo apt-get install ia32-libs under 13.10 results in:

Reading package lists... Done

Building dependency tree

Reading state information... Done

Package ia32-libs is not available, but is referred to by another package.

This may mean that the package is missing, has been obsoleted, or

is only available from another source

However the following packages replace it:

  lib32z1 lib32ncurses5 lib32bz2-1.0

E: Package 'ia32-libs' has no installation candidate

How do I install the 32-bit drivers on my 64-bit 13.10 installation?