Linux connection tracking and DNS
Question:
My busy Linux-based nameserver is giving unreasonably slow responses. How do I know if Linux connection tracking is causing the problem I am having?
Answer:
If you are seeing slow responses and timeouts from your nameserver, check its kernel log output ("dmesg" is one way to do this). You might find hundreds of entries similar to this:
If so, this article is definitely for you: read on. If not, and you are running BIND named on GNU/Linux, it won't hurt to read on anyway. (Lack of the p...
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