To reproduce what happens on physical systems I create two VMs with nics in the same bridge on the host. Booting the first VM up and allowing the network config to apply, and then when booting the second VM up layer, as it applies the IPv6 address to the interface in the bridge, the kernel detects a duplicate IPv6 address and networkd fails to configure the interface.
This happens on Focal systemd-networkd, but works fine on Jammy; that is the network configuration is applied (including the duplicate V6) but critically the v4 address and routes are as well. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/2000325 Title: ipv6 duplicate address prevents interface configuration Status in systemd package in Ubuntu: New Bug description: 1) # lsb_release -rd Description: Ubuntu 20.04.5 LTS Release: 20.04 2) # apt-cache policy systemd systemd: Installed: 245.4-4ubuntu3.19 Candidate: 245.4-4ubuntu3.19 Version table: *** 245.4-4ubuntu3.19 500 500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 100 /var/lib/dpkg/status 245.4-4ubuntu3.15 500 500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages 245.4-4ubuntu3 500 500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages 3) Interface should be configured with all addresses and routes 4) Interface is missing ipv4 and ipv6 static addresses and associated routes ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: systemd 245.4-4ubuntu3.19 ProcVersionSignature: Ubuntu 5.4.0-135.152-generic 5.4.212 Uname: Linux 5.4.0-135-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.25 Architecture: amd64 CasperMD5CheckResult: skip Date: Thu Dec 22 16:13:11 2022 Lsusb: Error: command ['lsusb'] failed with exit code 1: Lsusb-t: Lsusb-v: Error: command ['lsusb', '-v'] failed with exit code 1: MachineType: QEMU Standard PC (i440FX + PIIX, 1996) ProcEnviron: TERM=vt220 PATH=(custom, no user) LANG=C.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-135-generic root=LABEL=cloudimg-rootfs ro console=tty1 console=ttyS0 SourcePackage: systemd UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/01/2014 dmi.bios.vendor: SeaBIOS dmi.bios.version: 1.13.0-1ubuntu1.1 dmi.chassis.type: 1 dmi.chassis.vendor: QEMU dmi.chassis.version: http://192.168.14.1:4444/register.html dmi.modalias: dmi:bvnSeaBIOS:bvr1.13.0-1ubuntu1.1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-focal:cvnQEMU:ct1:cvrhttp//192.168.14.14444/register.html: dmi.product.family: cisco dmi.product.name: Standard PC (i440FX + PIIX, 1996) dmi.product.version: pc-i440fx-focal dmi.sys.vendor: QEMU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/2000325/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
