route with link scope must not required a via parameter

[Jean-Daniel Dupas]

I'm trying to define a route to a single host via a link.
This can be done either using 'ip'

ip route add 192.168.0.1/32 dev enp1s0

or using systemd unit:

[Route]
Destination=192.168.0.1/32
Scope=link

but when I try to define such route in netplan:

- { to: 192.168.0.1/32, scope: link }

it fails with the error:

'Error in network definition //etc/netplan/20-vip.yaml line 8 column 8: unicast route must include both a 'to' and 'via' IP'

[Lukasz Klimek (lklimek)]

Workaround: use "via: 0.0.0.0"

[Daniel Axtens (daxtens)]

Hi,

I can confirm this. We've also seen this in LP: #1789862, and a fix has been committed in https://github.com/CanonicalLtd/netplan/pull/33

Regards,
Daniel

[Mathieu Trudel-Lapierre (cyphermox)]

Fixed in netplan.io version 0.40 and above (so released in 18.04 and later releases).

This is fixed in https://github.com/CanonicalLtd/netplan/commit/b4f4c637ded8750414081247a874df4683d86e32