Under section "2.c.
Under section "2.c. Übersicht: Netbooting" the link for "Diskless HOWTO" pointing to http://www.gentoo.de/doc/de/diskless-howto.xml fails to load with error 404.
STOP! http://www.gentoo.de/main/de/kontakt.xml gentoo.de != gentoo.org
Fixed, link pointed to /de/ and is now pointing to /en/