BIND 9.10 fast only on alias IP
Ict Security
ict.security.job at gmail.com
Mon May 20 08:06:09 UTC 2019
Dear guys,
i am experiencing a very strange beahviour of Bind under busy peak time.
With a quite important number of incoming DNS queries, response are
really, really slow;
sometimes they even stuck.
If i try to query, in those busy moments, an alias secondary IP
address of the same machine, the response is really immediate!
I have disabled connection tracking and raised up nf_conntrack_max.
In system logs, i do not see any limitations or buffer full.
Do i need to balance incoming connection on more alias IP?
Or shall i change some other parameters which i am not aware at the moment?
Thank you, cheers!
Francesco
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