点分主机名
DOD INTERNET HOST TABLE SPECIFICATION
STATUS OF THIS MEMO
This RFC is the official specification of the format of the Internet
Host Table. This edition of the specification includes minor
revisions to RFC-810 which brings it up to date. Distribution of this
memo is unlimited.
INTRODUCTION
The DoD Host Table is utilized by the DoD Hostname Server maintained
by the DDN Network Information Center (NIC) on behalf of the Defense
Communications Agency (DCA) [See RFC-953].
LOCATION OF THE STANDARD DOD ONLINE HOST TABLE
A machine-translatable ASCII text version of the DoD Host Table is
online in the file NETINFO:HOSTS.TXT on the SRI-NIC host. It can be
obtained via FTP from your local host by connecting to host
SRI-NIC.ARPA (26.0.0.73 or 10.0.0.51), logging in as user =
ANONYMOUS, password = GUEST, and retrieving the file
"NETINFO:HOSTS.TXT". The same table may also be obtained via the NIC
Hostname Server, as described in RFC-953. The latter method is
faster and easier, but requires a user program to make the necessary
connection to the Name Server.
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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不能添加百分号、 井字号或为 DNS 主机名的下划线,即使服务器安装指南中不会列出他们为无效字符。
如果您尝试插入字符无效,会显示以下错误:
原因
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