Bug 1405398

Summary: Enable GRE over IPv6 (CONFIG_IPV6_GRE)
Product: [Fedora] Fedora Reporter: Jakub Sitnicki <jsitnick>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 25CC: cz172638, gansalmon, ichavero, itamar, jforbes, jonathan, kernel-maint, madhu.chinakonda, mchehab
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
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:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-01-30 20:21:13 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

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.