I'm having a bit of trouble with RPM dependencies.  I'm trying to package faifa, which manages HomePlug AV interfaces.  There's a library (libfaifa) and two executables, faifa and hpav_cfg.  I'm putting the executables in the main package (faifa), the shared library in a -libs subpackage, and the headers in a -devel subpackage.  I have both the main package and -devel subpackage depending on the -libs subpackage, both using the line:

Requires:       %{name}-libs%{_isa} = %{version}-%{release}

When I attempt to install the main package, it says that there's an unsatisfied "Requires: libfaifa.so.0()(64bit)" even if I already have the -libs subpackage installed.

I'm sure I've overlooked something in the packaging guidelines and other relevant documentation, but I can't seem to figure out how to fix this.  Any assistance will be much appreciated. My spec and SRPM are at:  http://fedorapeople.org/~brouhaha/faifa/