[cups.general] HostNameLookups Double

[Michael Sweet]

Nuzhna,

On Apr 29, 2012, at 8:23 AM, Nuzhna Pomoshch wrote:
> I have tried using this option (with a cupsd.conf that lists servers by name), but it it seems to break things.
> 
> First /var/log/cups/error.log fills up with:
> 
> W [30/Apr/2012:00:00:00 +0000] IP lookup failed - connection from localhost closed!


Your hosts file and/or DNS is not configured properly.  "Double" means that a lookup of the loopback address (127.0.0.1 or ::1) needs to return "localhost" and a lookup of "localhost" needs to return one of the same addresses that came in.  Often a DNS server or hosts file is misconfigured to redirect localhost to a different address or the loopback interface addresses to a real hostname, which will break the "double" lookup.

Feel free to file a bug requesting that we log the values we got to help with debugging these kinds of issues:

	http://www.cups.org/str.php

_________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair