Thanks for your answer but when I read about "log_fqdn"
Turn this on if you wish to log fully qualified domain names
in the access.log. To do this Squid does a DNS lookup of all
IP's connecting to it. This can (in some situations) increase
latency, which makes your cache seem slower for interactive
browsing.
Is this very bad to the performance or it has a little effect, because of DNS
looks up ?
