x86_64 packages depends on i586.

[Joshua C.]

I made a custom x86_64 livecd (f11) and found that the following
x86_64 packages depend on i586 and i686. Is this an error when
compiling those packages or they do need the 32 bits?

 mesa-libGL-devel.x86_64 needs

 glibc.i686
 libdrm.i586
 libdrm-devel.i586
 nss-softokn-freebl.i586


 pulseaudio-module-x11.x86_64  needs

 alsa-lib.i586
 dbus-libs.i586
 e2fsprogs-libs.i586
 flac.i586
 gdbm.i586
 glibc.i586
 libICE.i586
 libSM.i586
 libX11.i586
 libXau.i586
 libXext.i586
 libXtst.i586
 libasyncns.i586
 libattr.i586
 libcap.i586
 libgcc.i586
 libogg.i586
 libsndfile.i586
 libstdc++.i586
 libxcb.i586
 ncurses-libs.i586
 nss-softokn-freebl.i586
 pulseaudio-libs.i586
 pulseaudio-utils.i586
 readline.i586
 sqlite.i586
 tcp_wrappers-libs.i586

I also found dupllicates of NetworkManager x86_64 and .i586 and
others. I wanted some -devel packages but I thought only the x86_64
versions would be pulled in.

How have this happened?