Public bug reported: Customer is reporting a problem with QL41xxx and Ubuntu internal DNS server. The issue appeared when the customer updated to the latest Ubuntu kernel 20.04.1 LTS version 5.4.0-52-generic. Issue was not observed with 4.5 ubuntu-linux.
Problem Definition: Product: PowerEdge R740xd Serial: C7J90W2 Hostname: xkubmin1r12 OS Version: /etc/os-release shows Ubuntu 18.04.4 LTS, but Booted kernel is the latest Ubuntu 20.04.1 LTS version 5.4.0-52-generic NIC: 2 dual-port (4) QLogic Corp. FastLinQ QL41000 Series 10/25/40/50GbE Controller [1077:8070] (rev 02) Firmware: 15.15.11 Inbox driver qede v8.37.0.20 Completed Detailed Problem Description: Anything that uses the internal Kubernetes DNS server fails. If an external DNS server is used resolution works for non-Kubernetes IPs. Customer is experiencing the same issue described in this article. https://github.com/kubernetes/kubernetes/issues/95365 Customer Impact: Production site The QLogic Nic 41262 is their main nic for all of their 14G environment thousands of servers. Unclear how many of those hosts are Kubernetes, but the point is they want the QL41000 to work since it is very prevalent in the entire environment. Below patch recently on upstream fixes this - [Note that issue was introduced by driver's tunnel offload support which was added in after 4.5 kernel] commit 5d5647dad259bb416fd5d3d87012760386d97530 Author: Manish Chopra <mani...@marvell.com> Date: Mon Dec 21 06:55:30 2020 -0800 qede: fix offload for IPIP tunnel packets IPIP tunnels packets are unknown to device, hence these packets are incorrectly parsed and caused the packet corruption, so disable offlods for such packets at run time. Signed-off-by: Manish Chopra <mani...@marvell.com> Signed-off-by: Sudarsana Kalluru <skall...@marvell.com> Signed-off-by: Igor Russkikh <irussk...@marvell.com> Link: https://lore.kernel.org/r/20201221145530.7771-1-mani...@marvell.com Signed-off-by: Jakub Kicinski <k...@kernel.org> Thanks, Manish ** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1909062 Title: Ubuntu kernel 5.x QL41xxx NIC (qede driver) Kubernetes internal DNS failure To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1909062/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
