/etc/rc.d/init.d/autofs contains the following:
if [ -f /etc/$map ] ; then
echo "$basecommand file /etc/$map ...
echo "$basecommand yp $map ..."
This breaks any lookup method that isn't file or yp, namely
nisplus and program, and hesiod if you recompile with it.
I forgot that autofs isn't exclusive-arch: i386 anymore.
This should be fixed in autofs-3.1.3-5, which will be in the
next Raw Hide release.
You will be able to specify in /etc/auto.master:
which specifies to use an nisplus map.