** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- 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/1540405
Title: i40e fails virtual networking Status in linux package in Ubuntu: Confirmed Bug description: With linux-hwe-generic-trusty we see kern.log entries for "TX driver issue detected, PF reset issued" on a NIC in a bond, followed by the same interface going down and up again. After this time networking to virtual machines bridged to that bond fails. We see either asymmetric traffic, with ARP replies not reaching the VMs, or no traffic at all to or from VMs. In this context, these are nova-compute nodes using OpenvSwitch and KVM. Reloading the i40e module corrects the networking. Setting TCP Segmentation Offload off on the NICs seems to prevent the PF reset, and we don't believe we have seen VM networking problems since doing so. # ethtool -i eth5 driver: i40e version: 1.3.4-k firmware-version: f4.33.31377 a1.2 n4.41 e1866 bus-info: 0000:04:00.1 supports-statistics: yes supports-test: yes supports-eeprom-access: yes supports-register-dump: yes supports-priv-flags: yes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1540405/+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
