Re: host name support in pg_hba.conf

From: "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov>
To: <peter_e(at)gmx(dot)net>
Cc: <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: host name support in pg_hba.conf
Date: 2010-08-10 12:32:38
Message-ID: 4C61009602000025000343E8@gw.wicourts.gov
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Peter Eisentraut wrote:
> On mån, 2010-08-09 at 13:56 -0500, Kevin Grittner wrote:
>> Peter Eisentraut wrote:

>>> is reverse looked up, which results in a host name.
>>
>> Some IP addresses have several host names, including in reverse
>> lookup; how is that handled?
>
> This is not possible,

http://en.wikipedia.org/wiki/Reverse_DNS_lookup#Multiple_pointer_records

> or at least the C library APIs don't expose it.

That may explain the prevalence of bugs in code dealing with it.

-Kevin

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