Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.7 kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.7-rc5-yakkety/ ** Tags added: kernel-da-key -- 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/1597806 Title: ipv6 neighbor discovery broken (on a bridge) Status in linux package in Ubuntu: Confirmed Bug description: I have a xenial (4.4.0-24-generic) machine that loses ipv6 connectivity every time I reboot the gateway it uses. br0 is a bridge which has eth0.2 as its only member, with (currently) 6 "scope global temporary deprecated dynamic" (privacy) addresses, and: inet6 2601:282:8100:3500:24c:40ff:fe1a:c570/64 scope global mngtmpaddr dynamic valid_lft 300sec preferred_lft 120sec The tcpdump trace on against eth0.2 of the broken machine: http://paste.ubuntu.com/18170606/ (fe80::1 is the gateway) http://paste.ubuntu.com/18173670/ is the output of lspci -vvn on one of the (quad) interfaces on the machine. Setting the bridge to promisc and turning it back off works around the issue. Tcpdump on the underlying eth0.2 does not. On another (yakkety) box, running 4-4-0.14-generic, I also see the problem: that interface is also br0, with eth0 (untagged) as its only member. All of the above leads me to believe that the kernel is not managing to correctly set up (at least some?) of the multicast addresses it needs to listen to on the bridge. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1597806/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
