This is an old revision of the document!
The workstations use DHCP to get IP addresses, this setting is down in rc.conf since they only have 1 network device.
Delete the HOSTNAME line, hostnames on workstations are set via DHCP, make sure the hostname is not in /etc/hosts as well.
/etc/rc.conf
interface=eth0 address= netmask= broadcast= gateway= DAEMONS=( *stuff* network *more stuff*)