kazulog@sv1:~$ cat /etc/os-release | head -2
PRETTY_NAME="Ubuntu 26.04 LTS"
NAME="Ubuntu"
kazulog@sv1:~$ sudo cat /etc/netplan/71-onlink.yaml
network:
  version: 2
  ethernets:
    ens3:
      routes:
        - to: 10.140.0.0/16
          via: 192.168.200.1
          on-link: true
kazulog@sv1:~$ ip route show 10.140.0.0/16
10.140.0.0/16 via 192.168.200.1 dev ens3 proto static onlink
kazulog@sv1:~$ sudo grep -A4 -B1 "10.140.0.0/16" /run/systemd/network/10-netplan-ens3.network
[Route]
Destination=10.140.0.0/16
Gateway=192.168.200.1
GatewayOnLink=true