Bug 699421 - ssh requests ipv6 addresses even with ipv6 disabled
Summary: ssh requests ipv6 addresses even with ipv6 disabled
Alias: None
Product: Fedora
Classification: Fedora
Component: openssh
Version: 15
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Jan F. Chadima
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2011-04-25 15:19 UTC by Orion Poplawski
Modified: 2011-05-01 03:23 UTC (History)
4 users (show)

Fixed In Version: openssh-5.6p1-31.fc15.1
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2011-05-01 03:23:53 UTC

Attachments (Terms of Use)

Description Orion Poplawski 2011-04-25 15:19:27 UTC
Description of problem:

I have a DSL router that fails to respond to AAAA records properly:

  3.853196 -> DNS Standard query A pkgs.fedoraproject.org
  3.853344 -> DNS Standard query AAAA pkgs.fedoraproject.org
  3.897350 -> DNS Standard query response A
  3.903481 -> DNS Standard query response

This results in:

ssh: Could not resolve hostname pkgs.fedoraproject.org: Name or service not known

This is the case even with ipv6 completely disabled.  Work around is to run "ssh -4 hostname".  Other programs like firefox and thunderbird work with ipv6 disabled.

Version-Release number of selected component (if applicable):

See also bug 697149.

Comment 1 Orion Poplawski 2011-04-25 17:08:20 UTC
This should fix:

--- openssh-5.6p1/sshconnect.c.getaddrinfo      2011-04-25 11:02:00.622740776 -0600
+++ openssh-5.6p1/sshconnect.c  2011-04-25 11:06:39.505254267 -0600
@@ -343,6 +343,7 @@
        memset(&hints, 0, sizeof(hints));
        hints.ai_family = family;
        hints.ai_socktype = SOCK_STREAM;
+       hints.ai_flags = AI_V4MAPPED | AI_ADDRCONFIG;
        snprintf(strport, sizeof strport, "%u", port);
        if ((gaierr = getaddrinfo(host, strport, &hints, &aitop)) != 0)
                fatal("%s: Could not resolve hostname %.100s: %s", __progname,

Comment 2 Orion Poplawski 2011-04-27 15:38:24 UTC
I see this has been fixed in rawhide, will we see it fixed in F15 soon?  Thanks!

Comment 3 Jan F. Chadima 2011-04-28 05:52:20 UTC
please test it and report. I do not put it into f15 before positive feedback.
If you have no way how to test it in rawhide I prepare testing package for you.

Comment 4 Orion Poplawski 2011-04-29 02:59:34 UTC
Works perfectly.  Thanks.

Comment 5 Fedora Update System 2011-04-29 07:25:57 UTC
openssh-5.6p1-31.fc15.1 has been submitted as an update for Fedora 15.

Comment 6 Fedora Update System 2011-04-30 00:47:29 UTC
Package openssh-5.6p1-31.fc15.1:
* should fix your issue,
* was pushed to the Fedora 15 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing openssh-5.6p1-31.fc15.1'
as soon as you are able to.
Please go to the following url:
then log in and leave karma (feedback).

Comment 7 Fedora Update System 2011-05-01 03:23:48 UTC
openssh-5.6p1-31.fc15.1 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.

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