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From: "psimerda at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sources.redhat.com
Subject: [Bug network/14415] New: AI_V4MAPPED is useless with AI_UNSPEC but they're used together as defaults when hints=NULL
Date: Sat, 28 Jul 2012 09:39:00 -0000 [thread overview]
Message-ID: <bug-14415-131@http.sourceware.org/bugzilla/> (raw)
http://sourceware.org/bugzilla/show_bug.cgi?id=14415
Bug #: 14415
Summary: AI_V4MAPPED is useless with AI_UNSPEC but they're used
together as defaults when hints=NULL
Product: glibc
Version: 2.15
Status: NEW
Severity: minor
Priority: P2
Component: network
AssignedTo: unassigned@sourceware.org
ReportedBy: psimerda@redhat.com
Classification: Unclassified
>From 'man getaddrinfo':
Specifying hints as NULL is equivalent to setting ai_socktype and
ai_protocol to 0; ai_family to AF_UNSPEC; and ai_flags to
(AI_V4MAPPED | AI_ADDRCONFIG).
...
If hint.ai_flags specifies the AI_V4MAPPED flag, and hints.ai_family
was specified as AF_INET6, and no matching IPv6 addresses could be
found, then return IPv4-mapped IPv6 addresses in the list pointed to
by res. If both AI_V4MAPPED and AI_ALL are specified in hints.ai_flags,
then return both IPv6 and IPv4-mapped IPv6 addresses in the list pointed
to by res. AI_ALL is ignored if AI_V4MAPPED is not also specified.
As I read it, AI_V4MAPPED is useless without AF_INET6. So either it is wrong,
or I miss something about AI_V4MAPPED that should be documented in the manpage.
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next reply other threads:[~2012-07-28 9:39 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-28 9:39 psimerda at redhat dot com [this message]
2012-07-31 18:44 ` [Bug network/14415] " tore at fud dot no
2012-08-03 4:04 ` carlos_odonell at mentor dot com
2012-08-03 4:06 ` carlos_odonell at mentor dot com
2012-08-03 16:12 ` psimerda at redhat dot com
2012-09-22 15:45 ` psimerda at redhat dot com
2012-12-04 0:00 ` carlos at systemhalted dot org
2013-01-03 14:54 ` psimerda at redhat dot com
2013-02-24 22:12 ` psimerda at redhat dot com
2013-10-20 20:54 ` neleai at seznam dot cz
2014-06-17 18:51 ` fweimer at redhat dot com
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