A fully qualified host name is the host name as specified in
    DNS/Bind.  It consists of a series of simple names starting with
    the most specific simple name, for example:

    mynode.hp.com

    Alternatively, you may enter the domain fullname at this prompt.
    The domain fullname consists of the DOMAIN namespace nickname,
    followed by a colon, and the fully qualified host name, for example:

    DOMAIN:mynode.hp.com