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Bug 155056 - ifdown triggers modprobing nonexistant "tun6to4" module
ifdown triggers modprobing nonexistant "tun6to4" module
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: initscripts (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Bill Nottingham
Brock Organ
Depends On:
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Reported: 2005-04-15 17:12 EDT by Eric Moret
Modified: 2014-03-16 22:53 EDT (History)
2 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2005-09-20 17:15:11 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Eric Moret 2005-04-15 17:12:08 EDT
+++ This bug was initially created as a clone of Bug #119614 +++

When having IPv6 enabled (sysconfig/network having
NETWORKING_IPV6=yes), the ifdown script triggers kernel
module autoloading of "tun6to4" (even if there is no 6to4 tunneling
configured) - which does not exist.

I guess the scripts are trying to check the device "tun6to4" for
existence and config, but this device doesn't exist, and there is
a mapping missing in modprobe.conf.dist which maps "tun6to4" to

I'm not sure wether my analysis is correct, so I'm assigning this
bug to initscripts first... maybe it needs forwarding to the
"modutils" component with a request to add the alias.

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

Even this may have been fixed in latest Fedora, it needs an errata for RHEL3 as 
the problem also occurs there.
Comment 1 Bill Nottingham 2005-09-20 17:15:11 EDT
This problem is resolved in the next release of Red Hat Enterprise Linux. Red
Hat does not currently plan to provide a resolution for this in a Red Hat
Enterprise Linux update for currently deployed systems.

With the goal of minimizing risk of change for deployed systems, and in response
to customer and partner requirements, Red Hat takes a conservative approach when
evaluating changes for inclusion in maintenance updates for currently deployed
products. The primary objectives of update releases are to enable new hardware
platform support and to resolve critical defects. 

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