28.3 Creating a Netplan Network Bridge

The creation of a network bridge on an Ubuntu system using Netplan involves the addition of an entry to the /etc/netplan/01-netcfg.yaml or /etc/netplan/00-installer-config.yaml file. Using your preferred editor, open the file and add a bridges entry beneath the current content as follows (replacing eno1 with the connection name on your system):

network:

  ethernets:

    eno1:

      dhcp4: true

  version: 2

  bridges:

    br0:

      interfaces: [eno1]

      dhcp4: yes

Note that the bridges: line must be indented by two spaces. Without this indentation, the netplan tool will fail with the following error when run:

Error in network definition: unknown key ‘bridges’

Once the changes have been made, apply them using the following command:

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