scripts/router-userdata.yaml

#cloud-config
hostname: router
package_update: true
package_upgrade: true

write_files:
- content: |
    network:
      ethernets:
        ens192:
          dhcp6: false
          dhcp4: false
          addresses: [ __PRIMARY_IPADDRESS__/__PRIMARY_NETMASK__ ]
          routes:
          - to: default
            via: __PRIMARY_GATEWAY__
          nameservers:
            addresses: [ 1.1.1.1 ]
        ens224:
          dhcp6: false
          dhcp4: false
          addresses: [ __SECONDIP_ADDRESS__/__SECONDARY_NETMASK__ ]
  path: /etc/netplan/50-cloud-init.yaml
  append: false

chpasswd:
  list: |
    root:MSFTavs1!
    ubuntu:MSFTavs1!
  expire: false

runcmd:
# SSH with password
- sed 's/PasswordAuthentication no/PasswordAuthentication yes/' -i /etc/ssh/sshd_config
- systemctl restart sshd
# Network setup
- netplan apply
# Routing capabilities
- echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf
- sysctl -p
- iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
- iptables-save >/etc/systemd/scripts/ip4save