The article contains instructions on how to manually add an IP address to servers with different operating systems.

To add an IP address, you will need to edit the network interfaces file. You can do this using standard OS editors. For example, in the Linux OS family, you can use the vi, nano, etc.

Example command to edit /etc/network/interfaces

vi /etc/network/interfaces
BASH

IPv6 settings


To add an IPv6 address, you will need information about the network parameters. This information is available in the VM card: go to Virtual Machines → click on the VM name → IP addresses tab → IPv6 tab → Network parameters button.

Example parameters

AlmaLinux


To assign an IP address:

  1. Connect to the server via SSH with superuser permissions.

  2. Specify the network settings in /etc/sysconfig/network-scripts/ifcfg-<interface> file, where <interface> is the name of the network interface. For example, /etc/sysconfig/network-scripts/ifcfg-eth0.

    Example of settings

    DEVICE=eth0
    ONBOOT=yes
    BOOTPROTO=static
    IPADDR=192.168.1.100
    NETMASK=255.255.255.0
    GATEWAY=192.168.1.1
    CODE

    DEVICE — interface name

    IPADDR — IP address

    NETMASK — network mask

    GATEWAY — gateway IP address

    Add IPv6 settings to the network interface file /etc/sysconfig/network-scripts/ifcfg-<interface>, where <interface> is the interface name. For example, /etc/sysconfig/network-scripts/ifcfg-eth0.

    Example of settings

    IPV6INIT=yes
    IPV6ADDR=2001:0DB8::/64
    IPV6_DEFAULTGW=2001:0DB8::1
    CODE

    IPV6ADDR — IPv6 address with network prefix

    IPV6_DEFAULTGW — gateway IP address

  3. Restart the NetworkManager software: 

    systemctl restart NetworkManager
    BASH
  4. Reconnect the network interface:

    nmcli device disconnect <interface> && nmcli device connect <interface>
    BASH

    <interface> — name of the network interface

CentOS


To assign an IP address:

  1. Connect to the server via SSH with superuser permissions.

  2. Specify the network settings in /etc/sysconfig/network-scripts/ifcfg-<interface> file, where <interface> is the name of the network interface. For example, /etc/sysconfig/network-scripts/ifcfg-eth0.

    Example of settings

    DEVICE=eth0
    ONBOOT=yes
    BOOTPROTO=static
    IPADDR=192.168.1.100
    NETMASK=255.255.255.0
    GATEWAY=192.168.1.1
    CODE

    DEVICE — interface name

    IPADDR — IP address

    NETMASK — network mask

    GATEWAY — gateway IP address

    1. Enable IPv6 support in the OS. Add the following line to the /etc/sysconfig/network file:

      NETWORKING_IPV6=yes
      CODE
    2. Add IPv6 settings to the network interface file /etc/sysconfig/network-scripts/ifcfg-<interface>, where <interface> is the interface name. For example, /etc/sysconfig/network-scripts/ifcfg-eth0.

      Example of settings

      IPV6INIT=yes
      IPV6ADDR=2001:0DB8::/64
      IPV6_DEFAULTGW=2001:0DB8::1
      CODE

      IPV6ADDR — IPv6 address with network prefix

      IPV6_DEFAULTGW — gateway IP address

  3. Restart the network service:

    systemctl restart network
    BASH

Debian, Ubuntu


To assign an IP address:

  1. Connect to the server via SSH with superuser permissions.
  2. Specify the network settings in /etc/network/interfaces:

    Example of settings

    iface ens3 inet static
      address 192.168.2.100
      netmask 255.255.255.0
      gateway 192.168.2.1
      auto ens3
    BASH

    ens3 — network interface

    address — IP address

    netmask — network mask

    gateway — gateway IP address

    Example of settings

    iface ens3 inet6 static
      address 2001:0DB8::
      netmask 64
      gateway 2001:0DB8::1
      auto ens3
    BASH

    ens3 — network interface

    address — IPv6 address

    netmask — subnet prefix length

    gateway — gateway IP address

  3. Restart the networking service:

    systemctl restart networking
    BASH

Assigning an IPv6 address in Windows


  1. Connect to the virtual machine via VNC or SPICE. To do so, in VMmanager go to Virtual machines → click on the VM name → VNC (SPICE)
  2. Press Win + R and execute the command:

    ncpa.cpl
    CODE
  3. Right click on the network connection → Properties
  4. Check that IPv6 (TCP/IPv6) is enabled. Select it and click on Properties
  5. Enable the option Use the next IPv6 address
  6. Enter any IPv6 address from the subnet that VMmanager allocated for the server.
  7. Specify the Subnet prefix length that VMmanager allocated for the server.
  8. Specify the Main gateway of the physical network.
  9. Click on OK to save the settings. 

Useful tips

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