Comment 1 for bug 2000713

Hi, thank you for your bug report.

I will investigate this further.

Reproducer:

network:
  renderer: networkd
  ethernets:
    eth0:
      routes:
        - to: 10.20.30.40/32
          via: 10.20.30.1
  tunnels:
    vxlan1:
      mode: vxlan
      id: 1
      link: eth0

Result:

[Match]
Name=eth0

[Network]
LinkLocalAddressing=ipv6

[Route]
Destination=10.20.30.40/32
Gateway=10.20.30.1
VXLAN=vxlan1

Result without the route:

[Match]
Name=eth0

[Network]
LinkLocalAddressing=ipv6
VXLAN=vxlan1