[Bugme-new] [Bug 9224] New: Settings to /proc/sys/net/ipv[46]/conf/all are not propagated

[bugme-daemon at bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=9224

           Summary: Settings to /proc/sys/net/ipv[46]/conf/all are not
                    propagated
           Product: Networking
           Version: 2.5
     KernelVersion: 2.6.24-rc1
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
        AssignedTo: acme at ghostprotocols.net
        ReportedBy: svdb+linux-kernel-bugs at stack.nl


Most recent kernel where this bug did not occur: 2.6.22 (not sure)
Distribution: custom
Hardware Environment: See attached files
Software Environment: See attached files.
Problem Description: Changing a setting in /proc/sys/net/ipv[46]/conf/all does
not propagate the setting to the individual network interfaces, for most
settings.

Steps to reproduce:
# cat /proc/sys/net/ipv6/conf/{all,default,lo,eth0}/autoconf
1
1
1
1
# echo 0 > /proc/sys/net/ipv6/conf/all/autoconf
# echo 0 > /proc/sys/net/ipv6/conf/default/autoconf
# cat /proc/sys/net/ipv6/conf/{all,default,lo,eth0}/autoconf
0
0
1
1

The problem occurs for other settings than "autoconf", but not for all.
"forwarding" is one which does work.

Changing settings for individual interfaces still works.

The problem is not specific to ipv6.


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