DNS "A" query for a single dot

Mark anonymoususr at gmail.com
Wed Mar 5 22:53:42 UTC 2008

Hello ,

Does anybody knows what an "A" query for a dot (".") means?
Is it part of DNS and serve a special purpose?
Is it a bug on the client making the query?
Is it an indicative of a bot/worm making queries?

I am parsing the DNS packet using the name server library (function
ns_initparse) and some  DNS packets have questions for "."

Thanks in advance

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