> For the complete documentation index, see [llms.txt](https://docs.up-network.ch/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.up-network.ch/documentation/guides/enabling-ipv6-on-your-service.md).

# Enabling IPv6 on Your Service

## Enabling IPv6 on Your Service

UP-NETWORK allows all VPS and dedicated servers to receive a full **/64 IPv6 subnet**.\
This guide explains how to enable IPv6, how to fix cases where the subnet was not assigned at deployment, and how to configure IPv6 on your operating system.

***

### Enabling IPv6 During Order

During the checkout process, you can enable the option:

✔ IPv6 /64 Subnet

If enabled, the service will automatically receive an IPv6 subnet during deployment.

***

### If IPv6 Was Not Enabled During Order

{% stepper %}
{% step %}

### After delivery

Wait for your VPS or dedicated server to be delivered.
{% endstep %}

{% step %}

### Edit service

Go to your service in the customer area and click **Edit**.
{% endstep %}

{% step %}

### Enable IPv6 /64 Subnet

Enable **IPv6 /64 Subnet** and save.
{% endstep %}
{% endstepper %}

***

{% hint style="warning" %}
Important: First Deployment Behaviour

Sometimes, during the **first deployment**, the IPv6 block may not attach automatically. If your IPv6 /64 does not appear, try the steps below or wait a few seconds — the subnet often appears shortly after enabling it.

We recommend ALWAYS activating IPv6 after the service has been deployed, even if you selected it during checkout.
{% endhint %}

#### Fix — Toggle IPv6

{% stepper %}
{% step %}
Disable IPv6 and save.
{% endstep %}

{% step %}
Re-enable IPv6 and save again.
{% endstep %}
{% endstepper %}

#### Fix — Wait

The subnet usually appears a few seconds after enabling it.

***

### Accessing Your IPv6 Subnet

Once IPv6 is enabled, your /64 subnet appears in:

* VPS: <https://vps.upn.li>
* Dedicated servers: Customer Area → Server Details

UP-NETWORK automatically assigns the first IPv6 of the /64.

Example:

* Subnet: `2a0e:xxxx:yyyy:zz00::/64`
* Auto-assigned IP: `2a0e:xxxx:yyyy:zz00::1`

If the IP wasn’t assigned, follow the OS configuration below.

***

## Configuring IPv6 on Your Operating System

### Linux — Debian / Ubuntu

#### Netplan Configuration

File: `/etc/netplan/01-netcfg.yaml`

```yaml
network:
  version: 2
  renderer: networkd
  ethernets:
    ens18:
      addresses:
        - 2a0e:xxxx:yyyy:zz00::1/64
      gateway6: GTW_IP
      nameservers:
        addresses:
          - 2a0e:xxxx:yyyy:zz00::1
          - 2606:4700:4700::1111
```

Apply:

```bash
sudo netplan apply
```

***

#### ifupdown Configuration

File: `/etc/network/interfaces`

```
auto ens18
iface ens18 inet6 static
    address 2a0e:xxxx:yyyy:zz00::1
    netmask 64
    gateway GTW_IP
```

Restart:

```bash
systemctl restart networking
```

***

### Linux — RHEL / AlmaLinux / Rocky

File: `/etc/sysconfig/network-scripts/ifcfg-eth0`

```
IPV6INIT=yes
IPV6ADDR=2a0e:xxxx:yyyy:zz00::1/64
IPV6_DEFAULTGW=GTW_IP
DNS1=2606:4700:4700::1111
```

Apply:

```bash
nmcli connection reload
nmcli connection up eth0
```

***

### Windows Server

Open PowerShell:

```powershell
New-NetIPAddress -InterfaceAlias "Ethernet" -IPAddress "2a0e:xxxx:yyyy:zz00::1" -PrefixLength 64 -DefaultGateway "GTW_IP"
```

Add DNS:

```powershell
Set-DnsClientServerAddress -InterfaceAlias "Ethernet" -ServerAddresses "2a0e:xxxx:yyyy:zz00::1","2606:4700:4700::1111"
```

Verify:

```powershell
ipconfig
```

***

## Testing IPv6

Ping IPv6:

```bash
ping6 ipv6.google.com
```

Check outbound IPv6:

```bash
curl -6 ifconfig.co
```

If IPv6 does not work, check:

* Correct assigned IP
* Gateway (`fe80::1`)
* Netmask `/64`
* Firewall rules

***

<figure><img src="/files/uEV3GntLBVJePXWrxtKW" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/ajcwB5Go2l66vlxZ6CFK" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/oCnlTdOh7asYX4Ji9U5e" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/rbu4kXtOCo8MJzyqwqIR" alt=""><figcaption></figcaption></figure>

***

Summary

* IPv6 can be enabled during order or after service delivery.
* If the /64 subnet does not appear → disable IPv6, save, re-enable.
* The first IPv6 of the prefix is assigned automatically.
* Manual configuration is available for Linux and Windows.
* IPv6 testing tools are included at the end.