I'm now running 13.04-to-be Raring Ringtail daily version (so 2013-02-12), with Linux 3.8.0-6-generic, and ... exactly the same behaviour:
After connecting to the Wifi, two public IPv6 address appear on the wlan0, and then disappear within a second or so. And dmesg says: [ 280.076792] IPv6: wlan0: IPv6 duplicate address 2a00:cd8:blabla:1dc0:6e87:d414:43ad detected! [ 280.485760] IPv6: wlan0: IPv6 duplicate address 2a00:cd8:blabla:1af4:6aff:fe9c:ced4 detected! [ 280.894809] IPv6: wlan0: IPv6 duplicate address 2a00:cd8:blabla:94b4:2566:5e86:dfc2 detected! [ 281.099125] IPv6: wlan0: IPv6 duplicate address 2a00:cd8:blabla:6d25:db13:c7bd:e28d detected! [ 281.099132] IPv6: ipv6_create_tempaddr: regeneration time exceeded - disabled temporary address support [ 433.114565] IPv6: wlan0: IPv6 duplicate address 2a00:cd8:blabla:1af4:6aff:fe9c:ced4 detected! [ 589.423402] IPv6: wlan0: IPv6 duplicate address 2a00:cd8:blabla:1af4:6aff:fe9c:ced4 detected! [ 773.027247] IPv6: wlan0: IPv6 duplicate address 2a00:cd8:blabla:1af4:6aff:fe9c:ced4 detected! So, my conclusion: NOT fixed in upstream. I will add the tag 'kernel-bug-exists-upstream'. FWIW: I did sudo sysctl net.ipv6.conf.wlan0.accept_dad=0 and after a few minutes, one public IPv6 address (the MAC-based one) appeared on wlan0. So ... same behaviour again. After disabling Wifi (but still net.ipv6.conf.wlan0.accept_dad=0) and enabling it again, two IPv6 addresses appeared: the MAC-based one, and another one (so: with privacy extensions). ubuntu@ubuntu:~$ uname -a Linux ubuntu 3.8.0-6-generic #11-Ubuntu SMP Mon Feb 11 16:02:49 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux ubuntu@ubuntu:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu Raring Ringtail (development branch) Release: 13.04 Codename: raring ubuntu@ubuntu:~$ ** Tags added: kernel-bug-exists-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1120617 Title: No IPv6 and "IPv6 duplicate address" with IPv6 privacy extensions on To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1120617/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
