On Thu, 27 Nov 2003, Mauro wrote:
> Squid caches dns queries with ipcache, isn't it?
Yes, but this is not entirely the same as using a caching DNS server.
Your packet trace clearly shows that Squid is sending the DNS queries to
your DNS servers but for some reason there is no response, so either
* Something drops the queries before they reach the DNS servers
* The DNS servers are not happy about the queries for some reason
* Something drops the responses from the DNS servers before they reach
the Squid server.
This may be alleveated by the fact that Squid batches retransmissions of
DNS queries each second, so when there is a lot of DNS queries queued for
retransmission there may be small storms of DNS queries sent. In your
packet trace it looked like only a single response came back from the DNS
servers per batch of DNS retransmissions.
Regards
Henrik
Received on Thu Nov 27 2003 - 09:11:58 MST
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