---
title: Disable IPv6 on Proxmox
description: How to permanently disable IPv6 on Proxmox VE Server.
template: comments.html
tags: [proxmox, ipv6]
---

# Disable IPv6 on Proxmox Permanently

By default, Proxmox IPv6 is enabled after installation. This means that the IPv6 stack is active and the host can communicate with other hosts on the same network via IPv6 protocol.

Output of `ip addr` command:

![Default IPv6 Proxmox][default-ipv6-proxmox-img]

You can disable IPv6 on Proxmox VE by editing the `/etc/default/grub` file.

```shell
nano /etc/default/grub
```

add `ipv6.disable=1` to the end of `GRUB_CMDLINE_LINUX_DEFAULT` and `GRUB_CMDLINE_LINUX` line. Don't change the other values at those lines.

```bash
GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1"
GRUB_CMDLINE_LINUX="ipv6.disable=1"
```

The config should look like this:

![Grub Configuration][grub-configuration-img]

Update the grub configuration.

```shell
update-grub
```

Save and exit. Reboot Proxmox Server to apply the changes.

Output of `ip addr` command after disabling IPv6 on Proxmox VE:

![No IPv6 Proxmox Image][no-ipv6-proxmox-img]

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[default-ipv6-proxmox-img]: ./assets/images/1ee15c1c-bd9a-11ec-926f-3b1ee33b95ee.jpg 'Default IPv6 Proxmox Image'
[grub-configuration-img]: ./assets/images/f1f18772-f881-11ec-9918-afad89ede03c.jpg 'Grub Configuration'
[no-ipv6-proxmox-img]: ./assets/images/542c7a30-bd9c-11ec-848e-932ce851a8c3.jpg 'No IPv6 Proxmox Image'

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