On mån, 2010-08-09 at 13:56 -0500, Kevin Grittner wrote:
> Peter Eisentraut <pete...@gmx.net> wrote:
>  
> > The client's IP address (known from the kernel)
>  
> Some machines have several IP addresses; how is that handled?

A connection comes in over exactly one address.
 
> > 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, or at least the C library APIs don't expose it.
Compare the getnameinfo() and getaddrinfo() man pages, for example.


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