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DNS dig's output.

DNS dig's output.

DNS dig's output.

Hi all,

Currently we run a small DNS server. Every thing seems working fine until we analyze the UDP packages. It has been found out that UDP pacakges contains a junk of rubish, a full list of 13 root servers the query went through. It takes a lot of volumes away and costs a lot considering the huge amount of queries which had taken place.

Attached please find you a screen print of dig for the query of www.163.com from our DNS server. All those informations inside the red frame are not suppose to be there.

However some times or for certain domains this will not show up, to my experience.

We are using BIND 9.10.1, EDNS0 is on, as the recursive server, using forward-only mood.
Does anyone in this place know what would be the reason for such case? What would be your suggestions if we would like to cut the junk off?

Thank you very much for your time!

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