Comment corriger, ubuntu not getting ip address on hyper-v?

[ForumBot]

I am using hyper-v as a hypervisor and installed ubuntu 21 on it.

There, whenever I start the VM, the eth0 (only one network interface connected,Default Switch of Hyper-v) is not getting IP and showing as down.

Please bare with my snaps, as I can't ssh to the machine to copy the output and paste here as text.

There is no /etc/network/interfaces file on my machine, as many forum questions modifying content on this file.

To make this network adapter up, I ran below command.

```
sudo ip link set eth0 up

```

Then, the network adapter is up now but without ip4 address.

To get ip address, I ran below command and it gets ip.

```
sudo dhclient eth0

```

Then, I get IPv4 address.

I need to do this every time I on the machine.

How to fix this?

[ForumBot]

Ubuntu now uses `netplan` for network config. There's an article that looks helpful here: [https://linuxconfig.org/netplan-network-configuration-tutorial-for-beginners](https://linuxconfig.org/netplan-network-configuration-tutorial-for-beginners)

But a relevant snippet that might need to go in `/etc/netplan/01-netcfg.yaml` or similar:

```
network:
version: 2
renderer: NetworkManager
ethernets:
eth0:
dhcp4: true

```

...then run `sudo netplan apply`.

Additional info here: [https://www.server-world.info/en/note?os=Ubuntu_21.04&p=dhcp&f=2](https://www.server-world.info/en/note?os=Ubuntu_21.04&p=dhcp&f=2)