I'd say this bug report is invalid, and not kernel related at all, and simply utopic probably had newer iproute2 userspace package with proper support for these flags.
See: https://patchwork.ozlabs.org/patch/519505/ Specifically address that is derived from MAC should be marked as mngtmpaddr, as this is then the template for privacy extensions if enabled. When privacy extensions are enabled, the MAC based address would also have noprefixroute flag, and additional address fd:: address would be generated from mngtmpaddr template and itself marked as temporary. The output you show looks correct when stateless auto-configuration is used, with privacy extensions not enabled. ** Changed in: linux (Ubuntu) Status: Confirmed => Invalid -- 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/1380614 Title: IPv6 address marked as 'mngtmpaddr' under utopic Status in linux package in Ubuntu: Invalid Bug description: Utopic amd64 cloud image, privacy extensions disabled: 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether fa:16:3e:45:cc:d4 brd ff:ff:ff:ff:ff:ff inet 10.5.17.8/16 brd 10.5.255.255 scope global eth0 valid_lft forever preferred_lft forever inet6 fd31:d8a7:86e5:5721:f816:3eff:fe45:ccd4/64 scope global mngtmpaddr dynamic valid_lft 86392sec preferred_lft 14392sec inet6 fe80::f816:3eff:fe45:ccd4/64 scope link valid_lft forever preferred_lft forever The address is correctly generated from the MAC of the network adapter, however the entry is marked mngtmpaddr which I think is incorrect. Envionment is SLAAC via radvd - equivalent entry from a trusty machine deployed in the same environment: 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether fa:16:3e:41:84:29 brd ff:ff:ff:ff:ff:ff inet 10.5.16.240/16 brd 10.5.255.255 scope global eth0 valid_lft forever preferred_lft forever inet6 fd31:d8a7:86e5:5721:f816:3eff:fe41:8429/64 scope global dynamic valid_lft 86390sec preferred_lft 14390sec inet6 fe80::f816:3eff:fe41:8429/64 scope link valid_lft forever preferred_lft forever ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: linux-image-generic (not installed) ProcVersionSignature: User Name 3.16.0-22.29-generic 3.16.4 Uname: Linux 3.16.0-22-generic x86_64 AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.14.7-0ubuntu5 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' CRDA: Error: [Errno 2] No such file or directory: 'iw' Date: Mon Oct 13 13:14:11 2014 Ec2AMI: ami-000000af Ec2AMIManifest: FIXME Ec2AvailabilityZone: nova Ec2InstanceType: m1.small Ec2Kernel: aki-00000002 Ec2Ramdisk: ari-00000002 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: OpenStack Foundation OpenStack Nova PciMultimedia: ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-22-generic root=UUID=3605e89b-72f3-4bd5-9402-90a5f101e0ca ro console=tty1 console=ttyS0 RelatedPackageVersions: linux-restricted-modules-3.16.0-22-generic N/A linux-backports-modules-3.16.0-22-generic N/A linux-firmware N/A RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/01/2011 dmi.bios.vendor: Bochs dmi.bios.version: Bochs dmi.chassis.type: 1 dmi.chassis.vendor: Bochs dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnOpenStackFoundation:pnOpenStackNova:pvr2014.1.3:cvnBochs:ct1:cvr: dmi.product.name: OpenStack Nova dmi.product.version: 2014.1.3 dmi.sys.vendor: OpenStack Foundation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1380614/+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