Bug 1241061

Summary: glibc doesn't provide definitions needed to support rfc3542 IPv6 socket properties
Product: [Fedora] Fedora Reporter: Nikos Mavrogiannopoulos <nmavrogi>
Component: glibcAssignee: Carlos O'Donell <codonell>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 22CC: arjun, codonell, fweimer, jakub, law, pfrankli, spoyarek
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: glibc-2.21-7.fc22 Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2015-07-16 02:33:38 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Nikos Mavrogiannopoulos 2015-07-08 11:24:43 UTC
Description of problem:
glibc doesn't provide definitions needed to support standard (rfc3542) IPV6 socket properties. For example to obtain the MTU value of the path, the IPV6_PATHMTU option to getsockopt() can be used. This is supported by the Linux kernel but not by glibc.



How reproducible:
Compile the following program.
#define _GNU_SOURCE
#include <unistd.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <sys/socket.h>

int main()
{
struct ip6_mtuinfo mtuinfo;
socklen_t len;

getsockopt(1, IPPROTO_IPV6, IPV6_PATHMTU, &mtuinfo, &len);

return 0;
}


Actual results:
Fails because IPV6_PATHMTU is undefined.

Expected results:
Compilation should complete.

Additional info:
A bug report and a fix was posted in Debian:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=753909

Comment 1 Carlos O'Donell 2015-07-08 15:06:19 UTC
Fixed upstream.

commit 1c1e3125206ef810dc7282023f6267a33b486233
Author: Carlos O'Donell <carlos>
Date:   Wed Jul 8 09:26:45 2015 -0400

    Add missing Advanced API (RFC3542) (1) defines.
    
    Fixes bug 18643.
    
    Defines IPV6_RECVPATHMTU, IPV6_PATHMTU, and IPV6_DONTFRAG for Linux.

Comment 2 Nikos Mavrogiannopoulos 2015-07-08 15:07:30 UTC
Thanks.

Comment 3 Fedora Update System 2015-07-08 19:06:25 UTC
glibc-2.21-7.fc22 has been submitted as an update for Fedora 22.
https://admin.fedoraproject.org/updates/glibc-2.21-7.fc22

Comment 4 Fedora Update System 2015-07-13 19:15:50 UTC
Package glibc-2.21-7.fc22:
* should fix your issue,
* was pushed to the Fedora 22 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing glibc-2.21-7.fc22'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2015-11443/glibc-2.21-7.fc22
then log in and leave karma (feedback).

Comment 5 Fedora Update System 2015-07-16 02:33:38 UTC
glibc-2.21-7.fc22 has been pushed to the Fedora 22 stable repository.  If problems still persist, please make note of it in this bug report.