This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- trusty' to 'verification-done-trusty'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/994931 Title: Altering use_tempaddr drops all IPv6 addresses Status in Linux: Invalid Status in linux package in Ubuntu: Confirmed Status in linux source package in Precise: Fix Committed Status in linux source package in Trusty: Fix Committed Status in linux source package in Utopic: Invalid Bug description: $ uname -a Linux expvr-alnilam 3.2.0-24-generic-pae #37-Ubuntu SMP Wed Apr 25 10:47:59 UTC 2012 i686 i686 i386 GNU/Linux $ sysctl net.ipv6.conf.eth2.use_tempaddr net.ipv6.conf.eth2.use_tempaddr = 2 # (as per the default /etc/sysctl.d/10-ipv6-privacy.conf in 12.04) # Add a static IPv6 address: $ sudo ip addr add 2001:470:9321:f003::1122/64 dev eth2 # Verify that it has been set up, and that a temporary address and a SLAAC address also exist: $ ip -6 addr list dev eth2 4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000 inet6 2001:470:9321:f003:74e3:aa2b:7ee5:c002/64 scope global temporary dynamic valid_lft 86393sec preferred_lft 14393sec inet6 2001:470:9321:f003:6c97:24ff:fe3f:263b/64 scope global dynamic valid_lft 86393sec preferred_lft 14393sec inet6 2001:470:9321:f003::1122/64 scope global valid_lft forever preferred_lft forever inet6 fe80::6c97:24ff:fe3f:263b/64 scope link valid_lft forever preferred_lft forever # Disable RFC 4941 temporary addresses: $ sudo sysctl net.ipv6.conf.eth2.use_tempaddr=0 net.ipv6.conf.eth2.use_tempaddr = 0 $ ip -6 addr list dev eth2 4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000 inet6 fe80::6c97:24ff:fe3f:263b/64 scope link tentative valid_lft forever preferred_lft forever I.e. on setting use_tempaddr=0, _all_ IPv6 addresses are removed, including statically-configured and non-temporary SLAAC-configured addresses. (The link-local address reappears quickly but the 'tentative' flag indicates that it has been newly re-added. The SLAAC address reappears after a slightly longer interval as the kernel continues to undergo SLAAC, but the static address is gone forever unless manually reinstated.) The same happens if use_tempaddr is changed from 0 back to 2. The expected outcome is that only temporary addresses are affected by a change to use_tempaddr. --- AcpiTables: AlsaDevices: total 0 crw-rw---T 1 root audio 116, 1 May 5 03:53 seq crw-rw---T 1 root audio 116, 33 May 5 03:53 timer AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.0.1-0ubuntu7 Architecture: i386 ArecordDevices: Error: [Errno 2] No such file or directory AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. CurrentDmesg: DistroRelease: Ubuntu 12.04 IwConfig: Error: [Errno 2] No such file or directory Lspci: Error: [Errno 2] No such file or directory Lsusb: Error: [Errno 2] No such file or directory Package: linux (not installed) PciMultimedia: ProcEnviron: TERM=screen.linux PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: root=UUID=b16ffd9c-a54a-4dd3-a839-16c382ea8787 ro console=hvc0 ProcModules: lp 17455 0 - Live 0x00000000 parport 40930 1 lp, Live 0x00000000 xenfs 17877 1 - Live 0x00000000 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14 RelatedPackageVersions: linux-restricted-modules-3.2.0-24-generic-pae N/A linux-backports-modules-3.2.0-24-generic-pae N/A linux-firmware 1.79 RfKill: Error: [Errno 2] No such file or directory Tags: precise Uname: Linux 3.2.0-24-generic-pae i686 UpgradeStatus: Upgraded to precise on 2012-05-05 (0 days ago) UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/994931/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp