Why does bind 8.2 need root cache in "forward only" mode?
Carl Mascott
cmascott at thecia.net
Thu Jun 22 16:56:02 UTC 2000
I was using bind 8.1.2 as a cache-only server for a small LAN with a dialup
link to my ISP. I just tried bind 8.2.2P5 with the same named.conf file and
discovered that, unlike 8.1.2, it always creates and primes a cache for the
root zone, even with global option "forward only". The only zone in my
named.conf is the reverse zone for 127.0.0 (I use /etc/hosts for my LAN).
Why does bind need a root cache when it is running "forward only"? In
"forward only" why should bind ever contact any name server other than one
of the defined forwarders?
Also, I don't know if it's related, but the new nslookup, unlike the old
one, causes a dialup every time it is started in interactive mode, before
any lookup is requested.
I ask these questions because I'd like to avoid unnecessary dialups.
Thanks!
--
Carl Mascott
cmascott at thecia.net
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