<postgresql@fruru.com> writes:
>> That might be a good argument in general, but it does not apply to
>> Postgres' use of 127.0.0.1, because we bind that socket to its own
>> address, so only packets out of the same socket will be received.
> What you're saying is that it shouldn't really matter whether you use
> 127.0.0.1, the ipv6 ::1 or another ipv4 or 6 address (but that's another
> can of worms :-).
As long as it's routed to our own machine, no it doesn't matter. But
AFAIK there is no other generally-accepted loopback address.
regards, tom lane