Bind 8.3.3 of debian package / CPU 100%

[Nicolas LIENARD]

Hi,
I was using a BIND 8.3.3 version from Debian package for a DNS CACHE server.

Some days ago, the CPU increased to 100% taken by named process.

I tried to debug (ndc debug, ndc querylog) and analysed log  (for flood) but nothing suspicious.

I tried to restart process and nothing change too.

So, i finaly install BIND9 from debian package and it resolved the CPU load problem.

The uptime of the box is 200 days and is using by thousands users. (500 queries / s).

Sometimes, in past,  we met  problems load but it was from specific IP which flood and we use iptables to block them.

in this case, only an update changed the situation.

Does somebody meet this kind of problem. ?

regards,

nicolas liénard