BIND 10 #1674: confusing CACHE_RRSET_REMOVE_OLD

[BIND 10 Development]

#1674: confusing CACHE_RRSET_REMOVE_OLD
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            Reporter:  jreed     |                        Owner:
                Type:  defect    |                       Status:  new
            Priority:  minor     |                    Milestone:  New Tasks
           Component:  resolver  |                     Keywords:
           Sensitive:  0         |              Defect Severity:  N/A
         Sub-Project:  DNS       |  Feature Depending on Ticket:
Estimated Difficulty:  0         |          Add Hours to Ticket:  0
         Total Hours:  0         |                    Internal?:  0
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 {{{
 2012-02-14 18:32:18.196 DEBUG [b10-resolver.cache] CACHE_RRSET_REMOVE_OLD
 removing old RRset for ams.sns-pb.isc.org./AAAA/IN to make space for new
 one
 }}}

 Why remove old RRSet on first query?

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Ticket URL: <http://bind10.isc.org/ticket/1674>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development