How do I add an additional IP address to an interface in Ubuntu 14
I want to have the wired interface simultaneously obtain a DHCP address, and also alias a fixed address so I can communicate with a device with a fixed IP address on a different subnet over the same link.
When searching for IP address aliasing in Ubuntu, I found this article How do I add interface aliases using Network Manager GUI?. Unfortunately, the Edit Connections GUI in Ubuntu 14 does not have the "additional addresses" button.
Where has this functionality moved?
Solution 1:
Skip the gui and do it via command line.
The following link provides detailed information on how to create the alias on a temporary basis, as well as how to edit the interfaces file to make the change permanent.
http://www.cyberciti.biz/faq/linux-creating-or-adding-new-network-alias-to-a-network-card-nic/
Information from site in case of site death:
ifconfig command line
You can use ifconfig command to configure a network interface and alias. For example:
- eth0 NIC IP 192.168.1.5
- eth0:0 first NIC alias: 192.168.1.6
To setup eth0:0 alias type the following command as the root user:
# ifconfig eth0:0 192.168.1.6 up
Verify alias is up and running using following command:
# ifconfig -a
# ping 192.168.1.6
However, if you reboot the system you will lost all your alias. To make it permanent you need to add it network configuration file.
# vi /etc/network/interfaces
Append the following to the file (This is in addition to existing information, not a replacement for it)
auto eth0:1
iface eth0:1 inet static
name Ethernet alias LAN card
address 192.168.1.7
netmask 255.255.255.0
broadcast 192.168.1.255
network 192.168.1.0
Save and close the file. Restart the network:
# /etc/init.d/networking restart
Solution 2:
In order to add an address temporarily use ip:
ip a add 192.168.178.2/24 dev enx0050b60c19af
For example to install OpenWRT on some old devices:
https://openwrt.org/toh/avm/avm_fritz_wlan_repeater_450e