BUG #4142: pg_dump will not work

The following bug has been logged online:

Bug reference: 4142
Logged by: Lee Ottaway
Email address: lee(at)fusionsoftwareuk(dot)co(dot)uk
PostgreSQL version: 8.3.1
Operating system: Vista
Description: pg_dump will not work
Details:

I activate pg_dump from my application and pass it the following
parameters:

pg_dump --host="NameofPC" --port=5432 -U "admin" --compress=3 --format=c
--verbose --file="C:\ProgramData\Bridge-IT\backup.sql" "nameofdatabase"

This works perfectly on any Windows XP machine, however when I try it on a
Vista machine I get the following error:

Connection to database "nameofdatabase" failed: FATAL: no_hba.conf entry
for host "fe80::e11a:753d:9916:1a28%8", user "admin", database
"nameofdatabase", SSL off

Now I know this related to IP addresses in some way, however I can connect
to the database perfectly on the Vista machine and from client machines
looking over the network, so how come everything can connect but pg_dump
can't??

I am using the following pg_hba.conf entries:

# IPv6 local connections:
host all all ::1/128 md5
host all all 192.168.0.0 255.255.0.0 md5

Any ideas??

Thanks

Lee Ottaway
Fusion Software (UK) Ltd