How do I enable IPv6 on my ColossusCloud VPS?

To enable IPv6 on your ColossusCloud VPS, log into the Client Portal and check your VPS’s network details. IPv6 is assigned automatically when the VPS is created. Every VPS comes with three network interfaces: public IPv4 (eth0), private VLAN (eth1), and IPv6 (eth2). No extra cost, no separate request needed.

This FAQ covers where to find your IPv6 address, how to verify it works, and what to do if you need more addresses.

Where to find your IPv6 address

1. Log into the Client Portal
2. Navigate to your VPS server list
3. Click on the VPS you want to check
4. Your IPv6 address is listed alongside your IPv4 in the network information section

Verify IPv6 is working

SSH into your VPS and test connectivity:

ping6 google.com

Replies confirm IPv6 is working. Check your assigned addresses with:

ip -6 addr show

Enable IPv6 for more than one address

To enable IPv6 for a block of addresses (Docker containers, VMs, multiple services), request a routed /64 or /56 subnet through the Client Portal. A /64 gives you 18 quintillion addresses, more than you’ll ever need. A /56 gives you 256 separate /64 subnets if you need to segment your network.

Both are free.

Enable IPv6 in your services

Most modern server software (Nginx, Apache, Node.js, Postgres, etc.) supports IPv6 out of the box. Update your configs to listen on IPv6 in addition to IPv4. Nginx example:

listen [::]:80;
listen [::]:443 ssl;

Don’t forget to add AAAA records to your DNS alongside existing A records so IPv6-capable clients can find your server.

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For a full walkthrough, see configuring IPv6 on Linux or configuring IPv6 on Windows.