[Bug 841353] Re: please enable IPv6 privacy extensions by default

[Fred]

** Tags added: ipv6 privacy

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Title:
  please enable IPv6 privacy extensions by default

Status in “procps” package in Ubuntu:
  New

Bug description:
  We don't appear to enable IPv6 privacy extensions[1] by default.
  Could we please do so?  Leaking the MAC address of any IPv6 enabled
  device is both undesirable and a regression from IPv4.

  Enabling them appears to be as simple as a sysctl.d file with the
  following in it:

    net.ipv6.conf.all.use_tempaddr = 2
    net.ipv6.conf.default.use_tempaddr = 2

  With those set, I now have 3 IPv6 addresses, one link local, one with
  my MAC address and one without my MAC address.  Although my machine
  will answer to all 3 it will only use the non-MAC address based one
  for outbound traffic.

  [1] http://tools.ietf.org/html/rfc4941

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