IPv6 Configuration on Utixo Dedicated Servers
The IPv6 protocol is the successor to IPv4, designed to solve the address exhaustion issue. It uses 128-bit addresses, providing virtually unlimited IP space.
Each Utixo dedicated server is assigned an IPv6 /64 block, which equals 18,446,744,073,709,551,616 usable addresses.
This guide explains how to properly configure IPv6 addresses within our infrastructure.
Terminology
| Parameter | Description |
|---|---|
| IPV6_BLOCK | IPv6 block assigned to your server |
| YOUR_IPV6 | Specific IPv6 address to configure |
| IPv6_PREFIX | Network prefix (e.g., /64) |
| IPv6_GATEWAY | Gateway address for your IPv6 block |
Requirements
- Failover IP with associated vMAC
- SSH access to the server
- Basic networking knowledge
Preliminary Information
If you're using a pre-installed OS from Utixo, the main IPv6 is already configured. For additional addresses (e.g., on virtual machines), a failover IP with vMAC is required for proper routing.
Configuration Example
- Assigned block: 2607:5300:60:47b3::/64
- Configured IP: 2607:5300:60:47b3::1
- Gateway: 2607:5300:60:47ff:ff:ff:ff:ff
Important Note
The Utixo IPv6 gateway format is always xxxx:xxxx:xxxx:xxff:ff:ff:ff:ff, and may differ from your block’s main range.
Configuration on Debian/Ubuntu
File: /etc/network/interfaces
[same code block as above, preserved]
Disable IPv6 Autoconfiguration (recommended)
To avoid unwanted network behavior, disable autoconf in /etc/sysctl.conf:
net.ipv6.conf.eth0.autoconf=0 net.ipv6.conf.eth0.accept_ra=0
Apply changes with:
# sysctl -p
Restart Networking
# service networking restart
Check IPv6 Connectivity
# ping6 -c 4 2001:4860:4860::8888
If no reply is received, please contact Utixo support.
Configuration on Other Distributions
RedHat, CentOS, ClearOS...
File: /etc/sysconfig/network-scripts/ifcfg-eth0
[same code block as above]
FreeBSD 10+
File: /etc/rc.conf
[same code block as above]
FreeBSD 8.3 or older
[same code block as above]
Need Help?
If you encounter issues with IPv6 configuration or connectivity, contact Utixo technical support for assistance.
