[Bug 997605] Re: Disabling IPv6 autoconfiguration in sysctl.conf doesn't affect boot process

The task "linux (Ubuntu)" has expired because it has had no new comments
or updates for more than three years.

If this issue is still present in an Ubuntu LTS kernel still under
active support, please reopen the bug and provide updated details. If
this issue was reported against an Ubuntu kernel no longer under active
support but the issue still exists in a currently supported Ubuntu
kernel, please open a new bug against that kernel version and provide
the updated details, with a reference link to the original bug.

This action was performed by an automated process maintained by the
Ubuntu Kernel Team.

** Tags added: kernel-autoclosed kernel-autoclosed-expired

** Changed in: linux (Ubuntu)
Status: Confirmed => Expired

--
You received this bug notification because you are subscribed to linux
in Ubuntu.
Matching subscriptions: Bgg, Bmail, Nb
https://bugs.launchpad.net/bugs/997605

Title:
Disabling IPv6 autoconfiguration in sysctl.conf doesn't affect boot
process

Status in linux package in Ubuntu:
Expired

Bug description:
When you put the following lines in sysctl.conf

net.ipv6.conf.all.autoconf = 0
net.ipv6.conf.all.accept_ra = 0

the expeced result is to disable IPv6 autoconfiguration at bootup,
but, actually, it does nothing, because sysctl.conf network settings
are applied after network has been started.

So what happens:
1. Network interfaces are started by /etc/init.d/networking
1a. IPv6 uses autocnfiguratin, because it is enabled at this point
2. Sysctl.conf settings are applied by /etc/init/procps.conf

I don't know if there is an easy solution, because inverting order
things are called could break something else.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/997605/+subscriptions