BUG #1110: psql -h localhost consults the nameservice

The following bug has been logged online:

Bug reference:      1110
Logged by:          Michael Enke

Email address:      michael.enke@wincor-nixdorf.com

PostgreSQL version: 7.4

Operating system:   Linux

Description:        psql -h localhost consults the nameservice

Details:

If I call "psql -h localhost" it is very slow
compared to "psql -h 127.0.0.1" since for "localhost"
the nameservice is consulted.

It is reproducable best in a loop. Call 50 times:
"psql -h localhost" takes 6 seconds
"psql -h 127.0.0.1" takes 0.6 seconds
This was not the case for psql from version 7.3
May be this has something to do with changes for IP v6.

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