[Bug 1174418] Re: Privacy Extensions are set by default on Ubuntu 13.04, but no temporary address will be generate

[Graeme Hewson]

I confirm this. IPv6 privacy extensions were enabled by default in 12.04
(actually, I don't see this in the release notes, or in any other
official documentation, but Internet search engines show "everyone" says
so), and they were working in 12.10.

Testing with a fresh install of Kubuntu 13.04, my eth0 interface doesn't
have a randomised address, only a link-local address, a global MAC-based
address and a DHCP-allocated IPv4 address.

/etc/sysctl.conf and /etc/sysctl.d/10-ipv6-privacy.conf in 13.04 have
been unchanged since 12.04.

Putting
net.ipv6.conf.eth0.use_tempaddr = 2
into 60-ipv6-privacy.conf or directly into /etc/sysctl.conf makes no difference, and even after a reboot /proc/sys/net/ipv6/conf/eth0/use_tempaddr is 0.

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https://bugs.launchpad.net/bugs/1174418

Title:
  Privacy Extensions are set by default on Ubuntu 13.04, but no
  temporary address will be generate

Status in “procps” package in Ubuntu:
  New

Bug description:
  Description: Ubuntu 13.04
  Release: 13.04

  Privacy Extensions are set by default on Ubuntu 13.04, but no
  temporary address will be generate.

  In sysctl (by default):

  net.ipv6.conf.all.use_tempaddr = 2

  --> that means: create and prefer privacy addresses and use them over
  the normal addresses.

  If i added the same line "net.ipv6.conf.all.use_tempaddr = 2" to the
  file /etc/sysctl.conf, everythings works fine after a restart. The
  problem is, that the parameter "2" is set by default (results shown
  by: "sysctl -a"), but don't work. In Ubuntu 12.04/12.10 this problem
  don't appears.

  Thanks for reading this. I love Ubuntu :)!

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