On Thu, Mar 27, 2003 at 11:56:10PM +0900, JINMEI Tatuya / [EMAIL PROTECTED]@C#:H?(B 
wrote:[...]
> For example, the address to name mapping for traceroute can be
> provided by ICMP node information messages (of course, it depends on
> whether intermediate routers support and allow the ICMP, and reply a
> useful node name.  But similar arguments apply to DNS reverse mapping
> as well.)

IPV4 reverse mapping is currently deployed, and therefore provides a
functioning operational/software model for IPV6 node identification. 
Any scenario involving deployment of a new mechanism necessarily creates
a substantial extra burden, in a number of areas. 

Kent
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