Your config file is apparently named /etc/netplan/netplan.conf, which does not match the required "*.yaml" pattern (which is documented in the netplan(5) manpage and elsewhere).
** Changed in: netplan.io (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ifupdown in Ubuntu. https://bugs.launchpad.net/bugs/1761294 Title: Network configuration doesn't survive reboots after bionic dist- upgrade Status in cloud-init package in Ubuntu: New Status in ifupdown package in Ubuntu: New Status in netplan.io package in Ubuntu: Invalid Bug description: I deployed Xenial in this machine with MAAS. After deployment i had re-configured interfaces manually (on /etc/network/interfaces), and removed /etc/network/interfaces.d. At some point, I upgraded the machine from Xenial to Bionic, and everything was working just fine with /e/n/i. About 2/3 weeks ago, I dist-upgraded bionic for the latest packages, and after reboot, networking didn't come up. To recover the machine, what i did is: 1. From the console, brought up the interfaces manually (eno1) 2. added an IP address manually (ip addr add) 3. Configured netplan and applied the config: network: version: 2 renderer: networkd ethernets: eno1: dhcp4: no dhcp6: no addresses: [192.168.1.13/24] gateway4: 192.168.1.1 nameservers: addresses: [18.104.22.168, 22.214.171.124] usb0: dhcp4: no bridges: br0: interfaces: [usb0] dhcp4: no addresses: [10.90.90.1/24] parameters: stp: false forward-delay: 0 max-age: 0 5. Interfaces dont get configured correctly: 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 17: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether ec:a8:6b:fd:ac:70 brd ff:ff:ff:ff:ff:ff inet 192.168.1.13/24 scope global eno1 valid_lft forever preferred_lft forever inet6 fe80::eea8:6bff:fefd:ac70/64 scope link valid_lft forever preferred_lft forever 19: usb0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether 00:0e:c6:88:b7:9f brd ff:ff:ff:ff:ff:ff inet6 fe80::20e:c6ff:fe88:b79f/64 scope link valid_lft forever preferred_lft forever 22: wlp2s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether c4:d9:87:5b:42:62 brd ff:ff:ff:ff:ff:ff 6. on reboot, the machine goes back to have no networking again, at all. Note that I also have /e/n/i configured. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1761294/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp