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PROTOCOLS(5) NetBSD File Formats Manual PROTOCOLS(5)
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protocols -- protocol name data base
The protocols file contains information regarding the known protocols
used in the DARPA Internet. For each protocol a single line should be
present with the following information:
official protocol name
Items are separated by any number of blanks and/or tab characters. A
hash (``#'') indicates the beginning of a comment; characters up to the
end of the line are not interpreted by routines which search the file.
Protocol names may contain any printable character other than a field
delimiter, newline, or comment character.
/etc/protocols The protocols file resides in /etc.
The protocols file format appeared in 4.2BSD.
A name server should be used instead of a static file.
NetBSD 4.0 June 5, 1993 NetBSD 4.0