On 12/15/2010 01:10 PM, Craig A. James wrote:
We set "HostnameLookups Off", yet we see many hostnames in both
/var/log/apache2/access.log and /var/log/apache2/rewrite log.
This is causing huge problems because some of our clients have IP
addresses with no DNS entries, and the delay caused by the lookup is
enough to trigger a missed TCP/IP ACK packet on the client, resulting in
a five-second delay for every single GET request.
What, besides "HostnameLookups", can cause Apache to do a DNS lookup?
(And yes, I checked HostnameLookups VERY carefully. It is Off in
apache2.conf, and doesn't occur anywhere else in the entire disk drive.)
Thanks,
Craig
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Craig,
Allow from <hostname> or <VirtualHost <hostname>:<port> > could cause
that as well.
Frank
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