How to set a static IP using netplan? (running Ubuntu Bionic server)

I've followed/looked at several guides (like this one) on how to do the above.

My problem is that no static IP is getting assigned to the built-in ethernet port. I have run

netplan apply

several times. I've also rebooted the PC and still no luck.

I am sure the ethernet port works as I was previously using it on Ubuntu 16.04 just before I decided to fresh install 18.04.2.

Any ideas what I could be doing wrong? I am going to use the ethernet port to connect my main PC to the Ubuntu server via a crossover cable.

If I set the ethernet port to use

dchp4:true

and connect an ethernet cable from it to my modem/router and disable my WiFi card (by removing the netplan config), the PC can connect to the net without any issues.

Thanks

---------------------------

This is the output of

netplan --debug apply

which also shows the contents of my YAML files. I have tried with and without dhcp4/dchp6/gateway4/renderer.

screenshot of netplan --debug: https://i.imgur.com/lBIFoa1.jpg

To configure Static IP address on your Ubuntu Bionic Server, you have to follow these steps:
1. Go to /etc/netplan/ directory in your server.
2. Now, you have to open a file called “01-netcfg.yaml” or “50-cloud-init.taml”. In this you have to Configure the following things:
• addresses: Here, you have to enter static IP address here for example (192.168.1.50/24)
• Gateway4: Here, you have to enter default gateway IP address for example (192.168.1.1)
• Nameserver: You have to add DNS entry for example (8.8.8.8, 8.8.4.4)
• Dhcp4: no
3. Now, you have to run “sudo netplan apply” command.
4. If there is an issue, you can run “sudo netplan –debug apply” command.

My netplan config for reference. Spacing is very important. Do not use tabs. This is configured to use itself for dns.

network:
 renderer: networkd
 version: 2
 ethernets:
  enp2s0:
   dhcp4: false
   dhcp6: false
   addresses: [192.168.1.2/24]
   gateway4: 192.168.1.1
   nameservers:
    addresses: [192.168.1.2]

A bridge would be similar.

network:
 renderer: networkd
 version: 2
 ethernets:
  enp2s0:
   dhcp4: false
   dhcp6: false
 bridges:
  br0:
   interfaces: [enp2s0]
   dhcp4: false
   dhcp6: false
   addresses: [192.168.1.2/24]
   gateway4: 192.168.1.1
   nameservers:
    addresses: [192.168.1.2]

No point having the bonds, bridges, vlans tags if you aren't using them. They just are more potential problems that you need to isolate as not being the issue.

Good info to know here!!!

Good info to know here!!!