We have a lot of 32-bit CentOS 6 servers with custom rpms built for i386 and i686 architectures in our own RPM repos.
We now have some 64-bit CentOS 6 servers, but would like to be able to install the 32-bit packages from the 32-bit repos.
I know that Debian supports "multiarch" that allows one to install 32-bit libraries and packages. What is the CentOS equivalent?