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I-D ACTION:draft-ietf-mip4-experimental-messages-00.txt



A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Mobility for IPv4 Working Group of the IETF.

	Title		: Experimental Message, Extension and Error Codes for Mobile IPv4
	Author(s)	: A. Patel
	Filename	: draft-ietf-mip4-experimental-messages-00.txt
	Pages		: 9
	Date		: 2003-12-9
	
Mobile IPv4 message types range from 0 to 255. This document 
reserves a message type for use by an individual, company, or 
organization for experimental purpose, to evaluate enhancements 
to Mobile IPv4 messages before formal standards proposal. 
        
Mobile IPv4 defines a general Extension mechanism to allow 
optional  information  to  be  carried  by  Mobile  IP  control 
messages. Extensions are not skippable, if defined in range [0-
127]  and  skippable,  if  defined  in  range  [128-255].  This 
document reserves extension types in both the skippable and 
non-skippable range for experimental use.  
        
Also, Mobile IPv4 defines error codes for use by FA [64-127] 
and HA [128-192]. This document reserves an error code in both 
these ranges for experimental use.

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