>After a little more investigation here, it appears that getfqdn() returns >the name unchanged (or perhaps run through the system's resolver libs) if >there's no reverse DNS PTR entry. In the case given above, >otherbox.mydomain.com didn't have a reverse DNS entry, so getfqdn() >returned 'OTHERBOX'. However, when getfqdn() is called with a name whose >IP *does* have a PTR record, it returns the correct FQDN.
That sounds entirely plausible. Many of these name resolver functions pre-date DNS, and show their /etc/hosts heritage somewhat (gethostbyaddr returning ip, names and aliases in one hit is a classic example - this isn't easy with DNS). >Thanks for the help. Now, couple more questions: > >getnameinfo() accepts the NI_NAMEREQD flag. It appears, though that a name >lookup (and associated error if the lookup fails) occurs independent of >whether the flag is specified. Does it actually do anything? > >Does getnameinfo() support IPv6? It appears to fail (with a socket.error >that says "sockaddr resolved to multiple addresses") if both IPv4 and IPv6 >are enabled. Someone more knowledgeable will have to answer these. -- Andrew McNamara, Senior Developer, Object Craft http://www.object-craft.com.au/ _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
