DNS name pointer

Kevin Darcy kcd at daimlerchrysler.com
Tue Apr 25 22:41:21 UTC 2006

Rohit Tandon wrote:

>Hi All,
>I was wondering if the NAME pointers that are used during compression
>of a DNS packet can actually point to another pointer within the DNS
>message. Is there any restriction that pointers should point to only
>NAME or part of a NAME?
Offhand, I don't see any explicit restriction on that in the RFCs, but 
what would be the value of adding the extra level(s) of indirection? I 
see only risks, since probably most DNS implementations wouldn't expect 
it and might handle it badly, and no benefits.

                              - Kevin

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