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Bug 1065001 - Starting docker service removes IPv6 default route
Summary: Starting docker service removes IPv6 default route
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: docker-io
Version: el6
Hardware: x86_64
OS: Linux
Target Milestone: ---
Assignee: Lokesh Mandvekar
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2014-02-13 16:47 UTC by Lucas Maneos
Modified: 2014-07-01 23:00 UTC (History)
8 users (show)

Fixed In Version: docker-io-0.8.0-3.el6
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2014-02-22 01:49:33 UTC

Attachments (Terms of Use)

Description Lucas Maneos 2014-02-13 16:47:25 UTC
Description of problem:

The docker init script does this:

    [ -x $preexec ] || exit 6
    $preexec -w net.ipv4.ip_forward=1 > /dev/null 2>&1
    $preexec -w net.ipv6.conf.all.forwarding=1 > /dev/null 2>&1

These two settings are not quite equivalent.  In particular, net.ipv6.conf.all.forwarding=1 disables autoconfiguration.

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


How reproducible:

Steps to Reproduce:
1. Start with a host using stateless IPV6 networking configuration.
2. Install docker-io.
3. Start docker-io service.

Actual results:
Loss of ::/0 route (previously auto-configured via a router advertisment).

Expected results:
No changes in routing table.

Additional info:

According to Documentation/networking/ip-sysctl.txt setting to 2 should re-enable it for that interface but that doesn't seem to work for me.

Comment 1 Fedora Update System 2014-02-14 16:12:24 UTC
docker-io-0.8.0-3.el6 has been submitted as an update for Fedora EPEL 6.

Comment 2 Fedora Update System 2014-02-16 11:25:13 UTC
Package docker-io-0.8.0-3.el6:
* should fix your issue,
* was pushed to the Fedora EPEL 6 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=epel-testing docker-io-0.8.0-3.el6'
as soon as you are able to.
Please go to the following url:
then log in and leave karma (feedback).

Comment 3 Fedora Update System 2014-02-22 01:49:33 UTC
docker-io-0.8.0-3.el6 has been pushed to the Fedora EPEL 6 stable repository.  If problems still persist, please make note of it in this bug report.

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