Bug 564122 - sysctl net.ipv6.conf.*.accept_ra* parameters are ignored when ipv6 forwarding is enabled
Summary: sysctl net.ipv6.conf.*.accept_ra* parameters are ignored when ipv6 forwarding...
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 13
Hardware: All
OS: Linux
low
medium
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-02-11 21:28 UTC by Darren Gamble
Modified: 2011-06-27 14:56 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-06-27 14:56:06 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Darren Gamble 2010-02-11 21:28:35 UTC
Description of problem:

The kernel will ignore IPv6 router advertisement messages when IPv6 forwarding is enabled, even when specifically configured to do otherwise.

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

kernel-2.6.31.12-174.2.3

How reproducible:

Always

Steps to Reproduce:
1. Enable IPv6 forwarding on a Linux machine
2. Enable desired RA values
3. Connect machine on an IPv6 network with RA messages.
4. Wait for next RA message.
5. Run "sysctl -w net.ipv6.conf.<interface>forwarding=0" to disable forwarding
6. Wait for next RA message.
  
Actual results:

The values of net.ipv6.conf.*.accept_ra* are ignored.  They will begin to be used only when forwarding is disabled.

Expected results:

The values of net.ipv6.conf.*.accept_ra* should be properly used to configure kernel behavior for router advertisement messages, independent of the forwarding settings.

Additional info:

This behavior is required for an IPv6 "Home Router" on a residential ISP (i.e. the IPv6 equivalent of an IPv4 NAT router).  See http://tools.ietf.org/html/draft-ietf-v6ops-ipv6-cpe-router for more information on recommended ways to configure one.

The current behavior would make a sensible default, but obviously not usable in all situations.

There does not appear to be any way to work around this defect.

Comment 1 Bug Zapper 2010-11-03 22:22:02 UTC
This message is a reminder that Fedora 12 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 12.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '12'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version prior to Fedora 12's end of life.

Bug Reporter: Thank you for reporting this issue and we are sorry that 
we may not be able to fix it before Fedora 12 is end of life.  If you 
would still like to see this bug fixed and are able to reproduce it 
against a later version of Fedora please change the 'version' of this 
bug to the applicable version.  If you are unable to change the version, 
please add a comment here and someone will do it for you.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events.  Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

The process we are following is described here: 
http://fedoraproject.org/wiki/BugZappers/HouseKeeping

Comment 2 Bug Zapper 2011-06-02 16:36:12 UTC
This message is a reminder that Fedora 13 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 13.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '13'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version prior to Fedora 13's end of life.

Bug Reporter: Thank you for reporting this issue and we are sorry that 
we may not be able to fix it before Fedora 13 is end of life.  If you 
would still like to see this bug fixed and are able to reproduce it 
against a later version of Fedora please change the 'version' of this 
bug to the applicable version.  If you are unable to change the version, 
please add a comment here and someone will do it for you.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events.  Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

The process we are following is described here: 
http://fedoraproject.org/wiki/BugZappers/HouseKeeping

Comment 3 Bug Zapper 2011-06-27 14:56:06 UTC
Fedora 13 changed to end-of-life (EOL) status on 2011-06-25. Fedora 13 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.


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