Sorry for the inconvenience. Known Navigation header breakage, its being "rebuilt."
There may be other unforeseen breakage primarily in the handbook portion of the wiki.
The Table Of Contents section of each "PC-BSD® Users Handbook" page may be the best workaround.
Translations:Creating an Automated Installation with pc/9.2/46/en
# Special option, will attempt dhcp on all found NICs # until the file can be fetched, or we run out of interfaces # nic_config: dhcp-all