[squid-users] Inconsistency in log files

Hi all,

How can this behaviour be explained?

PC with IP address 136.186.1.50 retrieves an object via a proxy server (proxy2) which finds that a cache peer (proxy1)
already has this object. The hierarchy codes in the logs on proxy2 correctly reports CD_SIBLING_HIT. The same object is
retrieved seconds later and the hierarchy code is sometimes NONE and at other times is CD_SIBLING_HIT.

Cache peers are configured as proxy-only no-query htcp.

proxy2 log:

1147232091.377 8036 136.186.1.50 TCP_MISS/200 9396777 GET http://download.skype.com/SkypeSetup.exe - CD_SIBLING_HIT/proxy1.cc.swin.edu.au application/octet-stream
1147232104.140 6489 136.186.1.50 TCP_MISS/200 9396777 GET http://download.skype.com/SkypeSetup.exe - NONE/- application/octet-stream
1147232138.699 7777 136.186.1.50 TCP_MISS/200 9396777 GET http://download.skype.com/SkypeSetup.exe - NONE/- application/octet-stream
1147232251.653 8340 136.186.1.50 TCP_MISS/200 9396777 GET http://download.skype.com/SkypeSetup.exe - CD_SIBLING_HIT/proxy1.cc.swin.edu.au application/octet-stream

proxy1 log:

1147232091.374 7571 136.186.1.117 TCP_HIT/200 9396684 GET http://download.skype.com/SkypeSetup.exe - NONE/- application/octet-stream
1147232104.137 6487 136.186.1.117 TCP_HIT/200 9396684 GET http://download.skype.com/SkypeSetup.exe - NONE/- application/octet-stream
1147232138.696 7774 136.186.1.117 TCP_HIT/200 9396684 GET http://download.skype.com/SkypeSetup.exe - NONE/- application/octet-stream
1147232251.649 8000 136.186.1.117 TCP_HIT/200 9396684 GET http://download.skype.com/SkypeSetup.exe - NONE/- application/octet-stream
Received on Fri May 19 2006 - 19:19:56 MDT