Date: Wed, 23 Apr 2003 17:24:45 -0700 From: Nicolas Galler <beanie@gryphonmud.com> To: freebsd-questions@freebsd.org Subject: getaddrinfo - lookup failure with PF_UNSPEC Message-ID: <200304231724.47250.beanie@gryphonmud.com>
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It all started when konqueror refused to connect to www.hud.gov, saying there
was no host by that name.
That did sound a bit strange so I did
nslookup www.hud.gov
and it was there, then I did
telnet www.hud.gov 80
and it was gone again.
I found out that
telnet -4 www.hud.gov 80
worked fine. Internet explorer (on win2k host behind the freebsd nat, using
freebsd host as dns server) also works.
So I wrote a little test, and it all boils down to this:
getaddrinfo("www.hud.gov") works with hints.ai_family=PF_INET, and doesnt work
with hints.ai_family=PF_UNSPEC.
I also tried on a linux box (redhat 7.1, linux 2.4.2) on a completely
different isp and had the same problem. Well except I couldn't test with
'telnet -4' because there is no '-4' switch on their telnet. A SunOS 5.7 (on
another completely different isp), configured without IPv6, worked OK.
I haven't found any host other than www.hud.gov exhibiting this behavior.
There doesn't seem to be any AAAA record for it (well, www is a CNAME for
www.content, which getaddrinfo doesn't see either, oddly enough it doesnt
have any problem with fhadirect.hud.gov, the name returned by a reverse
lookup).
I am running FreeBSD 5.0-RELEASE. The kernel is configured with INET6 but I
left all the inet6 to its default/automatic configuration. Lifting the
firewall doesn't change the problem.
Thanks for any help.
Nick
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