If you are using more than one floating IP, then the number on the interface (eth0:1) will be increased (example eth0:2).
On Debian based distributions (Ubuntu versions before 20.04, Debian):
- Access the server via SSH.
-
Create the configuration file and open an editor:
touch /etc/network/interfaces.d/60-my-floating-ip.cfg nano /etc/network/interfaces.d/60-my-floating-ip.cfg - Paste the following configuration into the editor and replace your.Float.ing.IP with your floating IP:
IPv4:
auto eth0:1
iface eth0:1 inet static
address your.Float.ing.IP
netmask 32IPv6:
auto eth0:1
iface eth0:1 inet6 static
address one IPv6 address of the subnet, e.g. 2a01:4f9:0:2a1::2
netmask 64-
Now you should restart your network. Caution: This will reset your network connection:
sudo service networking restart
Ubuntu 20.04:
- Access the server via SSH.
-
Create the configuration file and open an editor:
touch /etc/netplan/60-floating-ip.yaml nano /etc/netplan/60-floating-ip.yaml -
Paste the following configuration into the editor and replace your.Float.ing.IP with your floating IP: IPv4:
network: version: 2 ethernets: eth0: addresses: - your.float.ing.ip/32
IPv6:
network:
version: 2
ethernets:
eth0:
addresses:
- your.float.ing.ip/64-
Now you should restart your network. Caution: This will reset your network connection:
sudo netplan apply
On RHEL based distributions (Fedora, CentOS):
- Access the server via SSH.
-
Create the configuration file and open an editor:
touch /etc/sysconfig/network-scripts/ifcfg-eth0:1 vi /etc/sysconfig/network-scripts/ifcfg-eth0:1 - Paste the following configuration into the editor and replace your.Float.ing.IP with your floating IP:
IPv4:
BOOTPROTO=static
DEVICE=eth0:1
IPADDR=your.Float.ing.IP
PREFIX=32
TYPE=Ethernet
USERCTL=no
ONBOOT=yesIPv6:
BOOTPROTO=none
DEVICE=eth0:1
ONBOOT=yes
IPV6ADDR=one IPv6 address of the subnet, e.g. 2a01:4f9:0:2a1::2/64
IPV6INIT=yes-
Now you should restart your network. Caution: This will reset your network connection:
systemctl restart network
