{"id":26009,"date":"2025-09-23T11:13:04","date_gmt":"2025-09-23T09:13:04","guid":{"rendered":"https:\/\/contabo.com\/blog\/?p=26009"},"modified":"2026-01-16T12:42:14","modified_gmt":"2026-01-16T11:42:14","slug":"how-to-configure-ipv6-on-your-vps","status":"publish","type":"post","link":"https:\/\/contabo.com\/blog\/how-to-configure-ipv6-on-your-vps\/","title":{"rendered":"How to Configure IPv6 on Your VPS\u00a0"},"content":{"rendered":"\n

IPv6 is an internet protocol, designed to replace IPv4. It provides more address space, better security, and faster performance. For server operators, enabling IPv6<\/a> ensures future-proof networking and improved connectivity. This guide walks you through configuring IPv6 on your VPS step by step. <\/p>\n\n\n\n

Cnfigure IPv6 on Your VPS\u00a0<\/h2>\n\n\n\n

Before setting up IPv6, check if your server already has an IPv6 address: <\/p>\n\n\n\n

ip -6 addr show <\/code><\/pre>\n\n\n\n
If no IPv6 address appears, configure it manually.<\/p>\n\n\n\n
For Ubuntu\/Debian\u00a0<\/h3>\n\n\n\n
Edit the Netplan configuration file: <\/p>\n\n\n\n
sudo nano \/etc\/netplan\/01-netcfg.yaml <\/code><\/pre>\n\n\n\n
Add your assigned IPv6 address, then apply the changes: <\/p>\n\n\n\n
sudo netplan apply <\/code><\/pre>\n\n\n\n
For CentOS\/RHEL\u00a0<\/h3>\n\n\n\n
Edit the network script: <\/p>\n\n\n\n
sudo nano \/etc\/sysconfig\/network-scripts\/ifcfg-eth0 <\/code><\/pre>\n\n\n\n
Restart the network service to apply the changes: <\/p>\n\n\n\n
sudo systemctl restart NetworkManager <\/code><\/pre>\n\n\n\n
Testing IPv6 Connectivity\u00a0<\/h2>\n\n\n\n
Once configured, verify IPv6 connectivity. First, check your routes: <\/p>\n\n\n\n
ip -6 route show <\/code><\/pre>\n\n\n\n
Then, ping a public IPv6 server to confirm functionality: <\/p>\n\n\n\n
ping6 2606:4700:4700::1111 <\/code><\/pre>\n\n\n\n
A successful response confirms IPv6 is working on your VPS. <\/p>\n\n\n\n
Configuring Firewall Rules\u00a0<\/h2>\n\n\n\n
Many firewalls block IPv6 by default. Allow necessary traffic using the commands below. <\/p>\n\n\n\n
For UFW (Ubuntu\/Debian)\u00a0<\/h3>\n\n\n\n
sudo ufw allow 22\/tcp <\/code><\/pre>\n\n\n\n
sudo ufw allow 80\/tcp <\/code><\/pre>\n\n\n\n
sudo ufw allow 443\/tcp <\/code><\/pre>\n\n\n\n
For Firewalld (CentOS\/RHEL)\u00a0<\/h3>\n\n\n\n
sudo firewall-cmd --add-service=ssh --permanent <\/code><\/pre>\n\n\n\n
sudo firewall-cmd --add-service=http --permanent <\/code><\/pre>\n\n\n\n
sudo firewall-cmd --add-service=https --permanent <\/code><\/pre>\n\n\n\n
sudo firewall-cmd --reload <\/code><\/pre>\n\n\n\n
Contabo IPv6 Support & Reverse DNS Setup\u00a0<\/h2>\n\n\n\n
If you\u2019re using a Contabo VPS, IPv6 is fully supported. To verify: <\/p>\n\n\n\n
If you\u2019re using a Contabo VPS<\/a>, IPv6 is fully supported. To verify: <\/p>\n\n\n\n
    \n
  1. Log in to the Contabo Customer Control Panel<\/a>. <\/li>\n<\/ol>\n\n\n\n
      \n
    1. Navigate to Networking \u2192 IP Management<\/strong>. <\/li>\n<\/ol>\n\n\n\n
        \n
      1. Check your assigned IPv6 address. <\/li>\n<\/ol>\n\n\n\n
        To prevent email delivery issues, configure Reverse DNS (PTR Record)<\/strong> in Reverse DNS Management<\/strong> in the Contabo Control Panel. <\/p>\n\n\n\n
        Watch Our YouTube Video on Configuring IPv6\u00a0<\/h2>\n\n\n\n
        If you prefer a visual walk-through we have a video on our YouTube ready for you: <\/p>\n\n\n\n
        \n