FreeBSD Security Advisory FreeBSD-SA-09:16.rtld
（中略）

NOTE: On the amd64 platform, the above procedure will not update the
ld-elf32.so.1 (i386 compatibility) run-time link-editor (rtld). On
amd64 systems where the i386 rtld are installed, the operating system
should instead be recompiled as described in
<URL:http://www.FreeBSD.org/handbook/makeworld.html>;

うわ、めんどくさ！ってUNIX板のほうに書こうとしたらamd64スレ落ちてたんで
スレ作ってます。その間こっちに書いとくです。