Static IP Hyper-V Ubuntu VM

hyper-v-static-ip.md

First in a powershell create a new network switch

New-VMSwitch -SwitchName "SwitchName" -SwitchType Internal
Get-NetAdapter       // (note down ifIndex of the newly created switch as INDEX)
New-NetIPAddress -IPAddress 192.168.0.1 -PrefixLength 24 -InterfaceIndex <INDEX>
New-NetNat -Name MyNATnetwork -InternalIPInterfaceAddressPrefix 192.168.0.0/24

In your ubuntu server open your network netplan

cd /etc/netplan
sudo nano <your-net-plan>

Type the following into your netplan

network:
  version: 2
  renderer: networkd  
  ethernets:
    eth0:
      addresses:
      - 192.168.0.2/24
      gateway4: 192.168.0.1
      nameservers:
        addresses:
        - 8.8.8.8
        - 8.8.4.4
      dhcp4: no

Then

sudo netplan apply

Source

What makes me confused is the IP address of 192.168.0.1 as stated here: https://docs.microsoft.com/en-us/virtualization/hyper-v-on-windows/user-guide/setup-nat-network (this is similar to your example).

It says, that the example IP "192.168.0.1" acts like a gateway to the host (eg: my computer that hosting a virtual machine). They came out with a confusing example of an IP address, as that IP is too common for a physical router gateway.

Instead of creating an internal switch, I end up creating an external switch that works perfectly fine.

gateway4 has been deprecated, can use below example:

network:
version: 2
renderer: networkd
ethernets:
eth0:
addresses:
- 192.168.0.2/24
routes:
- to: default
via: 192.168.0.1
nameservers:
addresses:
- 8.8.8.8
- 8.8.4.4
dhcp4: no

IP addresses like 192.168.0.x can be used on a local WiFi network, so it's better to replace them with 192.168.10.x so in a powershell:
New-VMSwitch -SwitchName "SwitchName" -SwitchType Internal
Get-NetAdapter // (note down ifIndex of the newly created switch as INDEX)
New-NetIPAddress -IPAddress 192.168.10.1 -PrefixLength 24 -InterfaceIndex
New-NetNat -Name MyNATnetwork -InternalIPInterfaceAddressPrefix 192.168.10.0/24

After creating a new network switch, you must add it to the VM in Hyper V Manager, without that static IP won't be working.

All you need in your netplan Ubuntu:
network:
  ethernets:
    eth0:
      addresses:
      - 192.168.10.2/24
  version: 2

If you had another switch in your VM before adding a new one, for example "Default Switch" then set eth1 instead of eth0, you need in your netplan Ubuntu:
network:
  ethernets:
    eth0:
      dhcp4: true
    eth1:
      addresses:
      - 192.168.10.2/24
  version: 2

Does dns work also with this setup? Assuming that host is utilizing DCHP to get DNS and IP?