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slow connect from Firebird 3 fbclient to Firebird 2.5 server [CORE4658] #4971

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@firebird-automations

Submitted by: Volker Rehn (vr2_s18)

Is duplicated by JDBC459

Votes: 1

fbclient of build 31529 takes a lot longer than previous versions to connect to Firebird 2.5, around 1 second vs some msecs.
This looks like a IPv4 / IPv6 issue on Windows, because if localhost is defined as 127.0.0.1 in etc/hosts, connects are as fast as with older versions of fbclient. If ::1 is also defined as localhost, connects are slow again.

First reported by Mark Rotteveel on firebird.devel.

Commits: FirebirdSQL/jaybird@879cbd4

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