| From: | Stephen Frost <sfrost(at)snowman(dot)net> |
|---|---|
| To: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
| Cc: | Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: host name support in pg_hba.conf |
| Date: | 2010-08-10 15:23:50 |
| Message-ID: | 20100810152350.GD26232@tamriel.snowman.net |
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| Lists: | pgsql-hackers |
* Peter Eisentraut (peter_e(at)gmx(dot)net) wrote:
> On mån, 2010-08-09 at 13:56 -0500, Kevin Grittner wrote:
> > Some IP addresses have several host names, including in reverse
> > lookup; how is that handled?
>
> This is not possible, or at least the C library APIs don't expose it.
> Compare the getnameinfo() and getaddrinfo() man pages, for example.
Don't know how it happens at a technical level, but I've definitely seen
it happen before.. Particularly with Windows domains where they don't
have "clean-up reverse DNS" enabled. Manifests itself by having
different host names show up on successive requests... Evil in any
case.
Stephen
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