Did this issue occur in a previous version of Ubuntu, or is this a new issue?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.15 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'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-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/v3.15-utopic/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** 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/1331150 Title: arp fails to update, 3.13.0-{24,29} Status in “linux” package in Ubuntu: Incomplete Bug description: in an AWS environment managed by BOSH, we saw tcp connectivity problems between pairs of VMs. VM A and VM B are up, running ubuntu 14.04-based images, and in the same vpc subnet. VM B is terminated, and another VM is created that uses the IP address from VM B The new VM tries to make a tcp connection to VM A. In some cases, the connection fails. Investigation reveals that VM A has the old MAC address in its neighbor list. In some cases, running arp -d <IP Address> on VM A "fixes the problem". Also in some cases, running arping in gratuitous arp mode on the new VM also fixes the problem. The problem does not occur if VM A is running an ubuntu 10.04-based image. The problem seems to occur only on machines with lots of tcp connection traffic between them. 'arp -d' and arping on the new VM do not seem to "fix" the problem if there are processes on the VMs that are trying to create new TCP connections. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1331150/+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
