Bug 495576 – IPv6 multicast scoping not working

Bug 495576 - IPv6 multicast scoping not working

Summary:	IPv6 multicast scoping not working

Status:	CLOSED WONTFIX

Aliases:	None

Product:	Fedora
Classification:	Fedora
Component:	kernel (Show other bugs)
Sub Component:
Version:	8
Hardware:	All Linux

Priority	low Severity medium
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Assigned To:	Kernel Maintainer List
QA Contact:	Fedora Extras Quality Assurance
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Reported:	2009-04-13 16:26 EDT by Richard Achmatowicz
Modified:	2009-04-22 17:08 EDT (History)
CC List:	5 users (show)

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Doc Type:	Bug Fix
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Last Closed:	2009-04-22 17:08:34 EDT
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Description Richard Achmatowicz 2009-04-13 16:26:22 EDT

Description of problem:
Multicasting to the IPv6 node-local multicast address ff01::1 causes multicast packets to be transmitted across node boundaries.    

Version-Release number of selected component (if applicable):
Linux localhost.localdomain 2.6.26.8-57.fc8 #1 SMP Thu Dec 18 19:19:45 EST 2008 i686 i686 i386 GNU/Linux

How reproducible:
Always.

Steps to Reproduce:
I'm using the IPv6 multicast utilities associated with and attached to Bug 231899.

On a two host LAN with hosts A and B:
1. run ./mcreceive6 ff01::1:2:3 1444 eth0 on host A 
2. run ./mcsend6 ff01::1:2:3 1444 on host B
3. type in some characters and press enter at the prompt on Host B
  
Actual results:
Multicast packets with destination ff01::1:2:3 arrive at host A.

Expected results:
Multicast packets with destination ff01::1:2:3 do not leave host B

Additional info:
With wireshark enabled, I see very different sets of messages exchanged when multicasting to ff02:: and ff01:: - ff02:: scoped multicasting generates ICMPv6  Multicast Listener Reports on join and leave, whereas ff01:: scoped multicasts do not.

Comment 1 Christopher Beland 2009-04-22 17:08:34 EDT

Thank you for your bug report. 

We are sorry, but the Fedora Project is no longer releasing bug fixes or any other updates for this version of Fedora. This bug will be set to CLOSED:WONTFIX to reflect this, but please reopen it if the problem persists after upgrading to the latest version of Fedora, which is available from: 

http://fedoraproject.org/get-fedora

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