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notice Hostnames should not contain an ‘_’

notice Hostnames should not contain an ‘_’:
such as vm_test01.2hei.net
Please have a look at RFC952 (http://tools.ietf.org/html/rfc952) Hostnames should not contain an ‘_’!
ASSUMPTIONS:
   1. A “name” (Net, Host, Gateway, or Domain name) is a text string up
   to 24 characters drawn from the alphabet (A-Z), digits (0-9), minus
   sign (-), and period (.).  Note that periods are only allowed when
   they serve to delimit components of “domain style names”. (See
   RFC-921, “Domain Name System Implementation Schedule”, for
   background).  No blank or space characters are permitted as part of a
   name. No distinction is made between upper and lower case.  The first
   character must be an alpha character.  The last character must not be
   a minus sign or period.  A host which serves as a GATEWAY should have
   “-GATEWAY” or “-GW” as part of its name.  Hosts which do not serve as
   Internet gateways should not use “-GATEWAY” and “-GW” as part of
   their names. A host which is a TAC should have “-TAC” as the last
   part of its host name, if it is a DoD host.  Single character names
   or nicknames are not allowed.

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该日志由 2hei 于2010年06月17日发表在 OpenSource 分类下,
原创文章转载请注明: notice Hostnames should not contain an ‘_’ | 2hei's site
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