bind 4.9.4-P1 problem

[Veeraraju_Mareddi]

Dear All ,

I am running bind 4.9.4-P1 . Due to some reasons i cannot upgrade this.

Suddenly this daemon  , will not give any answers for queries. Then i have
to restart the daemon .

Can any one of you tell what is  problem , and how to resolve that .

Thanks more.

with regards
Veeraraju
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