Question

1

Error in network definition at netcfg.yaml file: unknown key tunnels

rated 0 times [ 1] [ 0] / answers: 1 / hits: 12902 / 1 Year ago, sat, april 8, 2023, 6:35:19

I'm using Ubuntu 18.04 bionic.

when I try to configure GRE Tunnel in the netcfg.yaml file I encounter an error:

Error in network definition //etc/netplan/01-netcfg.yaml line x column x: unknown key tunnels.

The yaml configuration looks like this:

network:

  version: 2

  renderer: networkd

  ethernets:

    ens01:

        addresses : [10.201.x.yyy/24]

        gateway4: 10.201.x.254  

        nameservers:

            addresses: [10.200.nn.tt]

        dhcp4: no

    ens02:

        dhcp4: no

        addresses : [10.200.aa.dd/24]

        routes:

        - to: 10.200.hh.0/24

          via: 10.200.aa.254 



  tunnels: 

    gre1: 

        mode: gre

        local: 10.200.aa.dd

        remote: 10.200.hh.cc

        addresses: 

          - 172.26.jj.14/32

        gateway4: 172.26.jj.13

What is the right way to configure GRE Tunnel on Ubuntu?

A similar yaml configuration, but I still got the same error:

The error is: Error in network definition line 3 column 2: unknown key tunnels

The netplan version is:

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jectedrin

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answered 1 Year ago ionash · Accepted Answer

The correct .yaml needs to look EXACTLY like this... exact spacing, indentation, no trailing spaces, and no tabs... suggest copy/paste, then edit addresses... (redacting the addresses is unnecessary and creates errors)...

network:

  version: 2

  renderer: networkd

  ethernets:

    ens01:

      addresses: [10.201.x.yyy/24]

      gateway4: 10.201.x.254

      nameservers:

        addresses: [10.200.nn.tt]

      optional: true

    ens02:

      addresses: [10.200.aa.dd/24]

      routes:

        - to: 10.200.hh.0/24

          via: 10.200.aa.254

      optional: true

  tunnels:

    gre1:

      mode: gre

      local: 10.200.aa.dd

      remote: 10.200.hh.cc

      addresses:

        - 172.26.jj.14/32

      gateway4: 172.26.jj.13

sudo netplan generate

sudo netplan apply

reboot

Update #1:

You have a very old version of netplan installed, and it may not support tunnels. Update netplan, or update your OS.