use_tempaddr always at 0 after a reboot

[fabien29200]

I am trying IPv6 and I want to activate the privacy address mechanism.

I have read everywhere to add "net.ipv6.conf.eth1.use_tempaddr=2" to /etc/sysctl.conf.

What I did. I tried a "sysctl -p" followed by "ifconfig eth1 down" and "ifconfig eth1 up".
This worked like a charm.

But after a reboot, the value of /proc/sys/net/ipv6/conf/eth1/use_tempaddr is always 0.

I tried to add those lines :

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

to /etc/sysctl.conf, but nothing to do, after a reboot, the value of /proc/sys/net/ipv6/conf/eth1/use_tempaddr is always 0.

So I could write a script to make "sysctl -p; ifconfig eth1 down; ifconfig eth1 up", but I think there is a bug somewhere no ?

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: network-manager 0.8.4~git.20110319t175609.d14809b-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
CRDA: Error: [Errno 2] Aucun fichier ou dossier de ce type
Date: Sun Jun 19 09:33:32 2011
EcryptfsInUse: Yes
Gconf:

IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007.1)
IpRoute:
 192.168.1.0/24 dev eth1 proto kernel scope link src 192.168.1.1 metric 1
 169.254.0.0/16 dev eth1 scope link metric 1000
 default via 192.168.1.254 dev eth1 proto static
IwConfig:
 lo no wireless extensions.

 eth1 no wireless extensions.

 vboxnet0 no wireless extensions.
Keyfiles: Error: [Errno 2] Aucun fichier ou dossier de ce type
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
ProcEnviron:
 LANGUAGE=fr_FR:en
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
RfKill:

SourcePackage: network-manager
UpgradeStatus: Upgraded to natty on 2011-05-02 (47 days ago)

[fabien29200 (fabien29200)]

After watching logs, my network is first detected as eth0.

Maybe udev rename it "eth1" later.

If I had "net.ipv6.conf.eth0.use_tempaddr=2", it works fine but it's a little tricky.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Mathieu Trudel-Lapierre (cyphermox)]

Fixed in Precise.