56 lines
1.5 KiB
Markdown
56 lines
1.5 KiB
Markdown
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---
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title: Disable IPv6 on Proxmox
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description: How to permanently disable IPv6 on Proxmox VE Server.
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template: comments.html
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tags: [proxmox, ipv6]
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---
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# Disable IPv6 on Proxmox Permanently
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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.
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Output of `ip addr` command:
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![Default IPv6 Proxmox][default-ipv6-proxmox-img]
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You can disable IPv6 on Proxmox VE by editing the `/etc/default/grub` file.
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```shell
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nano /etc/default/grub
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```
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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.
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```bash
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GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1"
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GRUB_CMDLINE_LINUX="ipv6.disable=1"
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```
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The config should look like this:
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![Grub Configuration][grub-configuration-img]
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Update the grub configuration.
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```shell
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update-grub
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```
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Save and exit. Reboot Proxmox Server to apply the changes.
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Output of `ip addr` command after disabling IPv6 on Proxmox VE:
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![No IPv6 Proxmox Image][no-ipv6-proxmox-img]
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<!-- appendices -->
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<!-- urls -->
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<!-- images -->
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[default-ipv6-proxmox-img]: ../../../assets/images/1ee15c1c-bd9a-11ec-926f-3b1ee33b95ee.jpg 'Default IPv6 Proxmox Image'
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[grub-configuration-img]: ../../../assets/images/f1f18772-f881-11ec-9918-afad89ede03c.jpg 'Grub Configuration'
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[no-ipv6-proxmox-img]: ../../../assets/images/542c7a30-bd9c-11ec-848e-932ce851a8c3.jpg 'No IPv6 Proxmox Image'
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<!-- end appendices -->
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