What were you trying to do that didn't work?

Given a system with interface been marked a unmanaged in NetworkManager
When applying desired state contains route to unmanaged interface,
Then nmstate is fail the apply action with error:

NmstateError: InvalidArgument: Route 'destination: 192.0.3.0/24 next-hop-interface: eth1 next-hop-address: 192.0.2.1 metric: 103': next hop interface eth1 not found

What is the impact of this issue to you?

OpenStack test impacted

Please provide the package NVR for which the bug is seen:

nmstate-2.2.48-1.el9

How reproducible is this bug?:

100%

Steps to reproduce

echo '---
routes:
  config:
  - destination: 192.0.3.0/24
    next-hop-address: 192.0.2.1
    next-hop-interface: eth1
    metric: 103
interfaces:
  - name: eth1
    type: ethernet
    state: ignore
    ipv4:
      address:
      - ip: 192.0.2.251
        prefix-length: 24
      dhcp: false
      enabled: true' | sudo nmstatectl apply -

Expected results

Desired route been ignored and no failure

Actual results

NmstateError: InvalidArgument: Route 'destination: 192.0.3.0/24 next-hop-interface: eth1 next-hop-address: 192.0.2.1 metric: 103': next hop interface eth1 not found