Ed Greshko wrote:
Bob Goodwin wrote:
Before and after for "host -v google.com"
Received 252 bytes from 127.0.0.1#53 in 917 ms
Received 252 bytes from 127.0.0.1#53 in 151 ms
Actually, the 100% sure way to know that your caching name server is
working is to run something like "tcpdump" or "ethereal" and capture
only packets for port 53.
When you do a "host" for a known non-cached host you'll see the query
going out. The second time you do the "host" you should not see a query
going out.
Ed*
*
*Ethereal might work but set-up is beyond me! I'll have to look at that
for a while. But "locate" found "tetehereal" which showed DNS activity
clearly on the first lookup and nothing on subsequent tries which I
interpret
as an indication that it is working. The times measured with "host" are
still varying
widely from as little as ~10 ms to typically a bit more than 100 ms?
And the need to rewrite "resolv.conf" after reboot is bothersome as is the
loss of the cached address data when that is done although I suspect
that may be done
to accommodate address changes?
Bob
*
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