I built a Trusty test kernel with a revert of the three commits mentioned in comment: #1. The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1527902/ Can you test this kernel and see if it resolves this bug? If it does, then we can narrow which of those three commit is the cause. If the bug still exits, we will probably want to perform a kernel bisect. Note, with this test kernel, you need to install both the linux-image and linux-image-extra .deb packages. Thanks in advance! -- 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/1527902 Title: 3.13.0-71: IPv6 UDP DNS packets are not received Status in linux package in Ubuntu: In Progress Status in linux-lts-trusty package in Ubuntu: In Progress Bug description: After upgrading linux kernel from version 3.13.0-68 to 3.13.0-71 then Kopete (IM messenger) stopped working, cannot connect to any jabber server. I started debugging this problem and found out that, problem resolve when I boot back 3.13.0-68 kernel version (without touching any system files or packages). When I boot 3.13.0-71 Kopete always does not connect. Next I debugged that problem on 3.13.0-71 is just when /etc/resolv.conf contains only IPv6 addresses of DNS servers. Problem is comes down to dns resolver (jabber in Kopete has its own for SRV records) and syscall recvfrom() (on IPv6 socket) always return error -EAGAIN without any data returned. But wireshark see that DNS response was recevied. So it looks like that after 3.13.0-68 kernel was included some change which broke receiving UDP packets via IPv6 socket. IPv4 is OK. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1527902/+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
