Public bug reported: Hi there,
we upgraded some of our 22.04er VMs this week and encounter some weird network issues. We couldn't find any dropped packages or other "visible" signs. After a while of try and error with ping, mtr and traceroute we realized curl was behaving "weirdly" After a reboot we were able to run e.g. `curl -I www.google.com` exactly once successfully and after that curl "hang" for a while, then it worked for a short while and hang again. To ping a destination always worked and was not flaky at all, so we assume it could be something with http? We found this: https://www.ubuntuupdates.org/package/core/jammy/main/updates/linux-tools-5.15.0-173-generic We read that "apparmor: fix memory leak in verify_header" so on a hunch we downgraded to linux-image-5.15.0-171-generic from linux- image-5.15.0-173-generic and all network issues disappeared. I hope this is any helpful p.s I wasn't able to chose the package name so I chose "I don't know", but it has to do with linux-image-5.15.0-173-generic ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-5.15.0-173-generic 5.15.0-173.183 ProcVersionSignature: Ubuntu 5.15.0-173.183-generic 5.15.198 Uname: Linux 5.15.0-173-generic x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Mar 16 06:32 seq crw-rw---- 1 root audio 116, 33 Mar 16 06:32 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.11-0ubuntu82.10 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: N/A CasperMD5CheckResult: unknown CloudArchitecture: x86_64 CloudID: hetzner CloudName: hetzner CloudPlatform: hetzner CloudSubPlatform: unknown Date: Thu Mar 19 08:50:01 2026 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd QEMU USB Tablet Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Lsusb-t: /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M |__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 480M MachineType: Hetzner vServer PciMultimedia: ProcFB: 0 virtio_gpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-173-generic root=UUID=be1e37b2-1f27-4d9f-8cc5-c947b721042d ro consoleblank=0 systemd.show_status=true console=tty1 console=ttyS0 RelatedPackageVersions: linux-restricted-modules-5.15.0-173-generic N/A linux-backports-modules-5.15.0-173-generic N/A linux-firmware 20220329.git681281e4-0ubuntu3.41 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/11/2017 dmi.bios.release: 1.0 dmi.bios.vendor: Hetzner dmi.bios.version: 20171111 dmi.board.name: Standard PC (Q35 + ICH9, 2009) dmi.board.vendor: KVM dmi.board.version: pc-q35-6.2 dmi.chassis.type: 1 dmi.chassis.vendor: QEMU dmi.chassis.version: NotSpecified dmi.modalias: dmi:bvnHetzner:bvr20171111:bd11/11/2017:br1.0:svnHetzner:pnvServer:pvr20171111:rvnKVM:rnStandardPC(Q35+ICH9,2009):rvrpc-q35-6.2:cvnQEMU:ct1:cvrNotSpecified:skuTM: dmi.product.family: Hetzner_vServer dmi.product.name: vServer dmi.product.sku: TM dmi.product.version: 20171111 dmi.sys.vendor: Hetzner ** Affects: ubuntu Importance: Undecided Status: New ** Tags: amd64 apport-bug jammy uec-images -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2144926 Title: Network issues without any kind of visible dropped packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/2144926/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
