Just in case, I also removed any arptables or iptables on the host. The problem is still present. Here is an even simpler LXC configuration file to reproduce (privileged LXC container on Debian Buster, 5.4.13 kernel):
# Distribution configuration lxc.include = /usr/share/lxc/config/common.conf lxc.arch = linux64 # Container specific configuration lxc.hook.pre-start = /usr/local/share/lxc/hooks/pre-start.sh vps526706 lxc.hook.post-stop = /usr/local/share/lxc/hooks/post-stop.sh vps526706 lxc.hook.destroy = /usr/local/share/lxc/hooks/destroy.sh vps526706 lxc.mount.fstab = /lxc/vps526706/fstab lxc.rootfs.path = dir:/lxc/vps526706/rootfs lxc.uts.name = vps526706 # Network configuration lxc.net.0.type = veth lxc.net.0.veth.pair = vps526706 lxc.net.0.flags = up lxc.net.0.link = br0 lxc.net.0.hwaddr = 02:00:00:52:67:06 lxc.net.0.name = eth0 lxc.net.0.ipv4.gateway = 192.168.252.1 lxc.net.0.ipv4.address = 192.168.252.171/32 -- 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/1863873 Title: Systemd fails to configure bridged network in LXC container Status in systemd package in Ubuntu: Incomplete Bug description: In all our unprivileged LXC containers running Bionic Beaver, installing systemd 237-3ubuntu10.39 results in losing network configuration. It is still possible to configure the network "by hand" with /usr/sbin/ip, but of course, the configuration is lost at reboot. Hosts: Debian Buster custom 5.3.9, 5.4.8 or 5.4.13 kernel Example container network configuration: lxc.net.0.type = veth lxc.net.0.veth.pair = vps525389 lxc.net.0.flags = up lxc.net.0.link = br0 lxc.net.0.hwaddr = 02:00:00:52:53:89 lxc.net.0.name = eth0 lxc.net.0.ipv4.gateway = 192.168.252.1 lxc.net.0.ipv4.address = 192.168.252.177/32 Steps to reproduce, inside the container: root@vps525389:~# lsb_release -rd Description: Ubuntu 18.04.4 LTS Release: 18.04 root@vps525389:~# apt-cache policy systemd systemd: Installed: 237-3ubuntu10.38 Candidate: 237-3ubuntu10.39 Version table: 237-3ubuntu10.39 500 500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages *** 237-3ubuntu10.38 500 500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages 100 /var/lib/dpkg/status 237-3ubuntu10 500 500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages root@vps525389:~# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 1958: eth0@if1959: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether 02:00:00:52:53:89 brd ff:ff:ff:ff:ff:ff link-netnsid 0 inet 192.168.252.177/32 brd 255.255.255.255 scope global eth0 valid_lft forever preferred_lft forever inet6 xxxx:xxxx:x:xx::x:xxxx/128 scope global valid_lft forever preferred_lft forever inet6 xxxx::xx:xxxx:xxxx/64 scope link valid_lft forever preferred_lft forever root@vps525389:~# apt install systemd Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: libnss-systemd libpam-systemd libsystemd0 Suggested packages: systemd-container policykit-1 The following packages will be upgraded: libnss-systemd libpam-systemd libsystemd0 systemd 4 upgraded, 0 newly installed, 0 to remove and 1 not upgraded. Need to get 3330 kB of archives. After this operation, 7168 B of additional disk space will be used. Do you want to continue? [Y/n] Get:1 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libnss-systemd amd64 237-3ubuntu10.39 [104 kB] Get:2 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libpam-systemd amd64 237-3ubuntu10.39 [107 kB] Get:3 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 systemd amd64 237-3ubuntu10.39 [2912 kB] Get:4 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libsystemd0 amd64 237-3ubuntu10.39 [206 kB] Fetched 3330 kB in 3s (1274 kB/s) (Reading database ... 18195 files and directories currently installed.) Preparing to unpack .../libnss-systemd_237-3ubuntu10.39_amd64.deb ... Unpacking libnss-systemd:amd64 (237-3ubuntu10.39) over (237-3ubuntu10.38) ... Preparing to unpack .../libpam-systemd_237-3ubuntu10.39_amd64.deb ... Unpacking libpam-systemd:amd64 (237-3ubuntu10.39) over (237-3ubuntu10.38) ... Preparing to unpack .../systemd_237-3ubuntu10.39_amd64.deb ... Unpacking systemd (237-3ubuntu10.39) over (237-3ubuntu10.38) ... Preparing to unpack .../libsystemd0_237-3ubuntu10.39_amd64.deb ... Unpacking libsystemd0:amd64 (237-3ubuntu10.39) over (237-3ubuntu10.38) ... Setting up libsystemd0:amd64 (237-3ubuntu10.39) ... Setting up systemd (237-3ubuntu10.39) ... Setting up libnss-systemd:amd64 (237-3ubuntu10.39) ... Setting up libpam-systemd:amd64 (237-3ubuntu10.39) ... Processing triggers for dbus (1.12.2-1ubuntu1.1) ... Processing triggers for libc-bin (2.27-3ubuntu1) ... root@vps525389:~# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 1958: eth0@if1959: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether 02:00:00:52:53:89 brd ff:ff:ff:ff:ff:ff link-netnsid 0 inet6 fe80::ff:fe52:5389/64 scope link valid_lft forever preferred_lft forever To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1863873/+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
