gre tunnels are down after netplan apply

[Tomasz P.]

After configuring gre tunnels via netplan the tunX devices are in the state down. I need to manually bring them up in order to have connectivity with another end of the tunnel.

Netplan file:

network:
  version: 2
  renderer: networkd
  tunnels:
    tun0:
      mode: gre
      local: 1.1.1.1
      remote: 2.2.2.2
      addresses:
        - 10.7.10.50/30
    tun1:
      mode: gre
      local: 3.3.3.3
      remote: 4.4.4.4
      addresses:
        - 10.7.10.54/30

Output of ip a:
16: tun1@NONE: <POINTOPOINT,NOARP> mtu 1476 qdisc noop state DOWN group default qlen 1000
    link/gre 1.1.1.1 peer 2.2.2.2
    inet 10.7.10.54/30 brd 10.7.10.55 scope global tun1
       valid_lft forever preferred_lft forever
17: tun0@NONE: <POINTOPOINT,NOARP> mtu 1476 qdisc noop state DOWN group default qlen 1000
    link/gre 3.3.3.3 peer 4.4.4.4
    inet 10.7.10.50/30 brd 10.7.10.51 scope global tun0
       valid_lft forever preferred_lft forever

Netplan version: 0.95-1
Systemd: 237

Networkd config files:
 cat 10-netplan-tun0*
[NetDev]
Name=tun0
Kind=gre

[Tunnel]
Independent=true
Local=1.1.1.1
Remote=2.2.2.2

[Match]
Name=tun0

[Network]
LinkLocalAddressing=ipv6
Address=10.7.10.50/30
ConfigureWithoutCarrier=yes

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Angel Abad (angelabad)]

I have the same issue on my gre tunnels.

Thanks!

[Damien Gardner (rendragnet)]

Yep, confirmed here too...

Running up a couple of new nodes, and was losing my mind trying to figure out what I was doing wrong. Went back to an existing node to confirm our rollout docs were correct, and config was correct, only thing I could find was existing servers were running 0.97-0ubuntu1~18.04 of netplan.io, new servers are on 0.98.

Did a dist-upgrade on one of the existing servers, and bingo, it now has the same issue.. :(