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Bug 1405398 - Enable GRE over IPv6 (CONFIG_IPV6_GRE)
Summary: Enable GRE over IPv6 (CONFIG_IPV6_GRE)
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 25
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-12-16 12:01 UTC by Jakub Sitnicki
Modified: 2019-01-09 12:54 UTC (History)
9 users (show)

Fixed In Version: kernel-4.9.6-200.fc25 kernel-4.9.6-100.fc24
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2017-01-30 20:21:13 UTC
Type: Bug
Embargoed:

Attachments (Terms of Use)

Description Jakub Sitnicki 2016-12-16 12:01:57 UTC 
Description of problem:

GRE over IPv6 is not enabled in the kernel:

  $ grep -H CONFIG_IPV6_GRE /boot/config-`uname -r`
  /boot/config-4.8.13-300.fc25.x86_64:# CONFIG_IPV6_GRE is not set

Hence this kind of tunnel cannot be used.

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

kernel-4.8.13-300.fc25.x86_64

How reproducible:

Always

Steps to Reproduce:

Attempt to create a GRE over IPv6 tunnel using iproute2:

  # ip -6 tu add tun0 mode ip6gre local fd00::1 remote fd00::2

Actual results:

tun0 device doesn't get created. 'ip' command exits with an error status (1) and complains about missing fallback device ip6gre0:

  add tunnel "ip6gre0" failed: No such device

Expected results:

'ip' command succeeds, exit status 0. tun0 device gets created:

  # ip link show tun0
  6: tun0@NONE: <POINTOPOINT,NOARP> mtu 1448 qdisc noop state DOWN mode DEFAULT qlen 1
      link/[823] fd:00:00:00:00:00:00:00:00:00:00:00:00:00:00:01 peer fd:00:00:00:00:00:00:00:00:00:00:00:00:00:00:01

Additional info:

This config option is enabled in RHEL7. We would like to test the same functionality on Fedora kernels.
Comment 1 Justin M. Forbes 2017-01-17 22:10:44 UTC 
This has been enabled in 4.10-rc4-git one for rawhide.
Comment 2 Fedora Update System 2017-01-26 17:30:04 UTC 
kernel-4.9.6-200.fc25 has been submitted as an update to Fedora 25. https://bodhi.fedoraproject.org/updates/FEDORA-2017-81fbd592d4
Comment 3 Fedora Update System 2017-01-26 17:32:58 UTC 
kernel-4.9.6-100.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2017-6cc158c193
Comment 4 Fedora Update System 2017-01-27 19:54:53 UTC 
kernel-4.9.6-100.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-6cc158c193
Comment 5 Fedora Update System 2017-01-28 04:54:51 UTC 
kernel-4.9.6-200.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-81fbd592d4
Comment 6 Fedora Update System 2017-01-30 20:21:13 UTC 
kernel-4.9.6-200.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.
Comment 7 Fedora Update System 2017-01-30 21:50:33 UTC 
kernel-4.9.6-200.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.
Comment 8 Fedora Update System 2017-01-30 22:17:48 UTC 
kernel-4.9.6-100.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
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