Preparing OVH vRack Config for Multiple IPv6 Subnets

OVH vRack IPv6 Configuration Guide (Only needed if you using additional IPv6 Subnets via vRack) This guide explains how to configure IPv6 subnets via OVH vRack with Link Aggregation (LACP) for optimal proxy performance.

Prerequisites

• OVH Dedicated Server (High Grade, Scale, or Advance range)
• Access to OVH Control Panel
• Basic understanding of networking concepts
• IPv4 /30 subnet: ~€7/month
• IPv6 /56 subnet: Free
• vRack: Free

Caution

• After this configuration, the original public IP will no longer be accessible
• All connectivity must go through vRack IP addresses
• This setup provides better stability for proxy applications by eliminating dual-interface routing conflicts
• The bonded interface provides redundancy and improved performance

Overview

This configuration will:

Create a bonded interface using both network cards Route all traffic through vRack (private network) Provide stable IPv4 and IPv6 connectivity Eliminate dual-interface routing issues

⚠️ Warning: After completion, your server will only be accessible via the new vRack IP addresses.

1. Order vRack

   • Log in to the OVH Control Panel
   • Navigate to Bare Metal Cloud → Network → vRack private network
   • Create a new vRack (if you don’t have one)
   • Wait for the vRack to be created (may take a few minutes)

2. Order IPv4 Block. (/30 IPv4) (You can order larger blocks if you want more than 1 usable IPv4 address)

   • Navigate to Bare Metal Cloud → Network → IP section and order a new IP block (/30 for IPv4)
   • Assign the IP block directly to your vRack.

   IPv4 /30 Subnet Allocation:

   Assumed you ordered the following IPv4 /30 subnet: 192.168.2.63/30

   IP 1 192.168.2.63: Network address (unusable)

   IP 2 192.168.2.64: Your new server IP ✅

   IP 3 192.168.2.65: Gateway IP (unusable)

   IP 4 192.168.2.66: Broadcast address (unusable)

3. Order IPv6 Block. (/56 IPv6) (You can repeat that step if you want more than one /56 subnet)

   • Navigate to Bare Metal Cloud → Network → IP section and order a new IP block (/56 for IPv6)
   • Assign the IP block directly to your vRack.

   IPv6 /56 Subnet Allocation:

   Assumed you ordered the following IPv6 /56 subnet: 2001:db8:abcd:1200::/56

   Since OVH allocates the first /64 subnet from your /56 for Routing and Gateway we have to split the /56 into smaller subnets.

   You can use a IPv6 Subnet Calculator like this one to divide your /56 into smaller subnets.

   • 2001:db8:abcd:1200::/64 - Assigned automatically by OVH to vRack serves as routing and Gateway (Not recommended for use in Kraken) ❌

   Attention

   The first IP 2001:db8:abcd:1200::2/64 must be added on your Server that Serves as Nexthop address for your other subnets. 2001:db8:abcd:1200::1 will be your gateway.

   • 2001:db8:abcd:1280::/57 - Available for your use ✅
   • 2001:db8:abcd:1240::/58 - Available for your use ✅
   • 2001:db8:abcd:1220::/59 - Available for your use ✅
   • 2001:db8:abcd:1210::/60 - Available for your use ✅

   You can add this subnets in vRack by clicking your /56 subnet and selecting “Add a subnet”.

   

   

4. Make sure your Dedicated Server is not yet connected to the vRack.

   If it is, disconnect it first. Otherwise you can’t activate the Link Aggregation (LACP) on the server.