DNS packet size question.
Cricket Liu
cricket at acmebw.com
Tue Jun 13 20:40:58 UTC 2000
> > What is the normal DNS packet size for a query and a response?
>
> There is no "normal" size. The minimum size of a DNS message that only
> has headers (no questions, answers or anything else) is 96 bytes. The
> size of the question, answer, authority and additional data sections
> will vary tremendously depending upon the type of data being queried (A
> vs PTR vs "*") and how/where the question gets processed.
Are you sure that 96 bytes is right? I think 12 bytes (96
bits) is more like the size of the header.
cricket
Acme Byte & Wire
cricket at acmebw.com
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