Knowledgebase

This article is related to our U.S. dedicated servers with private network connectivity.

To ensure the proper functioning of private networking on your dedicated server, you must establish a static route for the 10.0.0.0/8 network. Follow the relevant instructions below based on your Linux distribution.

CentOS 7/8, AlmaLinux 8

1. Create a route file

   nano /etc/sysconfig/network-scripts/route-{interface_name}

   replace {interface_name} with your secondary NIC interface name (i.e. eno2, eth1,  enp1s0f1)
   
   
2. Add the following to the route file

   10.0.0.0/8 via {gateway} dev {interface_name}

   replace {gateway} with your private networking gateway IP address and {interface_name} with your secondary NIC interface name (e.g. eno2, eth1,  enp1s0f1)
   
   
3. Restart networking
   CentOS 7

   service network restart

   AlmaLinux 8/9 

   nmcli connection reload; nmcli connection up ifname {interface_name}

Almalinux/RHEL/RockyLinux 8/9/10 (NetworkManager CLI)

Using NetworkManager CLI you can easily add/remove static routes with a simple command.

1. Use this command to add a static route to interface eth1:
   

   nmcli connection modify eth1 +ipv4.routes "10.0.0.0/8 <Gateway_IP>"​

   - Replace 10.0.0.0/8 with the private network IP range.
   - Replace <Gateway_IP> with the private network gateway IP.
   - Replace eth1 with your server's interface name.
   
   
2. Reload the connection profiles and restart eth1 interface:
   

   nmcli connection reload
   nmcli connection up ifname eth1​

   Replace eth1 with your server's interface name.

3. Verify the static route with this command, it'll show all ipv4 static routes:
   

   ip -4 route​

4. Done! Now you've added a static route.

• You can remove the static route with this command:
  

  nmcli connection modify eth1 -ipv4.routes "10.0.0.0/8 <Gateway_IP>"​​

  - Replace 10.0.0.0/8 with the private network IP range.
  - Replace <Gateway_IP> with the private network gateway IP.
  - Replace eth1 with your server's interface name.

Ubuntu (netplan)

1. Edit the netplan YAML file inside /etc/netplan/

   nano /etc/netplan/50-cloud-init.yaml

   Note: If you didn't find this file, look for a .yaml file inside /etc/netplan/
   
   
2. Add this section under the ethernet/interface in question

   routes:
     - to: 10.0.0.0/8
       via: {gateway}
       on-link: true
   

   Replace {gateway} with the private network gateway IP address.
   
   Note:
   Text indentation might not be displayed correctly. Please correct the indentations of the above text before using it in the netplan YAML file.
3. Apply changes

   netplan apply

Windows

1. Open CMD as Administrator
2. Execute the command 
   

   route -p ADD 10.0.0.0 MASK 255.0.0.0 {gateway_IP}

   Replace {gateway_IP} with the private network gateway IP address.
   
   
3. It should print OK! on success.

Verify the new static route on Linux

You can check the created route using the following command:

ip route

You should find the new route among other system-created routes. The output will be similar to:

10.0.0.0/8 via 10.2.2.1 dev enp1s0f1 proto static onlink