Bug 252139 - getnameinfo does not support ipv6
Summary: getnameinfo does not support ipv6
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: glibc
Version: 6
Hardware: i386
OS: Linux
low
medium
Target Milestone: ---
Assignee: Jakub Jelinek
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Keywords:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2007-08-14 07:05 UTC by Tomasz Kepczynski
Modified: 2007-11-30 22:12 UTC (History)
0 users

(edit)
Clone Of:
(edit)
Last Closed: 2007-08-14 07:33:49 UTC


Attachments (Terms of Use)
getnameinfo test program (1.23 KB, text/x-csrc)
2007-08-14 07:05 UTC, Tomasz Kepczynski
no flags Details

Description Tomasz Kepczynski 2007-08-14 07:05:03 UTC
Description of problem:
As in title. See output of attached test program.

Version-Release number of selected component (if applicable):
glibc-2.5-18.fc6.i686

How reproducible:
always

Additional info:
I've seen this problem on fully updated FC6, on F7 and CENTOS5
(this means RHEL5 is affected).
Reproducible on both i386 and x86_64.

Comment 1 Tomasz Kepczynski 2007-08-14 07:05:03 UTC
Created attachment 161256 [details]
getnameinfo test program

Comment 2 Jakub Jelinek 2007-08-14 07:33:49 UTC
User error.  You should pass a->ai_addrlen as second argument to getnameinfo,
sizeof (*a->ai_addr) is big enough for IPv4, but not for IPv6.
On Linux
sizeof (struct sockaddr) == sizeof (struct sockaddr_in) == 16,
but sizeof (struct sockaddr_in6) == 28 and some other struct sockaddr_* are
even bigger.


Note You need to log in before you can comment on or make changes to this bug.