How do I set a static IP in Ubuntu?

Question

I am a new with Linux, having years experience with Windows servers/desktops and am having issues setting a static IP. I am using a method used for previous versions of Ubuntu, which doesn't seem to work with 16.04

I have used the command sudo nano /etc/network/interface and added the following

iface enp0s25 inet static
address 10.10.8.2
netmask 255.255.0.0
gateway 10.10.1.1
dns-nameservers 8.8.8.8 8.8.4.4

I have rebooted the system and the Ethernet is pretty much dead, ping doesn't work at all. I have tried to modify /etc/NetworkManager/NetworkManager.conf and made the following changes

#dns=dnsmasq (comment out the dnsmasq)
[ifupdown]
managed=true (changed from false)

With this I can get Ethernet to work sporadically, however it eventually fails.

I have tried this configuration on two other machines plus a virtual machine as well and all have the same results. I can confirm these settings work fine when I install Windows on any of these machines. As well when I let DHCP auto configure, everything works fine no issues.

I figure I am missing something here, setting up a static IP should not be difficult at all.

Solution 1

I had the same problem and this was my solution:

sudo nano /etc/network/interfaces

and paste (altering for your network) this under # The primary network interface:

auto enp0s25
iface enp0s25 inet static
address 192.168.0.16
netmask 255.255.255.0
gateway 192.168.0.1
dns-nameservers 8.8.4.4 8.8.8.8

You can get correct interface name using Terminal command ifconfig -a on ubuntu 16.04 or ip address on 18.04+

Shutdown your Virtual Machine and then!!! Go to network settings and click on refresh MAC address button a few times :)

and start your VM and you should get internet!

UPDATE 20.02.2019

For ubuntu 18.04+ you need to edit this file

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

network:
    ethernets:
        enp0s3:
            addresses: [192.168.0.55/24]
            gateway4: 192.168.0.1
            dhcp4: no
            nameservers:
              addresses: [1.1.1.1,8.8.8.8]
            optional: true
    version: 2

Solution 2

Setting the static IP address as above in the accepted answer here works, but one has to flush the old IP addr setting and then restart networking.service:

sudo ip addr flush enp0s25
sudo systemctl restart networking.service

Then verify it is correct:

ip add

Solution 3

# interfaces(5) file used by ifup(8) and ifdown(8)
# auto lo
# iface lo inet loopback
auto enp2s0 
iface enp2s0 inet static
    address 172.16.9.124
    netmask 255.255.240.0
    gateway 172.16.0.9
dns-nameservers 8.8.8.8

Solution 4

sudo vim /etc/network/interfaces

    auto lo
    iface lo inet loopback
    auto eth0
    iface eth0 inet static
    address 192.168.1.10
    gateway 192.168.1.1
    netmask 255.255.255.0
    dns-nameservers 8.8.8.8

sudo ifdown eth0 && sudo ifup eth0

Solution 5

I had the same problem and the solution "was" simply... for me, at least.

auto ens160
iface ens160 inet static
address 172.31.0.164/22
netmask 255.255.252.0
gateway 172.31.0.2
network 172.31.0.0
broadcast 172.31.3.255
dns-nameservers 172.31.0.21 172.31.0.18

#Add internal route
up route add -net 172.16.168.0/21 gw 172.31.0.20 dev ens160

And, create an empty file with the name of the network interface in:

~$ touch /etc/network/interfaces.d/ens160

It works...

View more solutions

Comments

[TeeStar]

Great thanks I appreciate it. It seems to work now, with no problems. It is very solid right now!

[BSalita]

In addition to the dns-nameservers fix, I had to use this fix: askubuntu.com/questions/574569/… My ISP is monkeybrains.net.

[Tshilidzi Mudau]

Hi @lanni654321, maybe you should edit your answer and add a few word, briefly explaining what you are doing and why? i think that would make your answer even more helpful, what do you think?

[RichVel]

The flush was necessary to avoid the old address being present on the interface (based on ip addr). The systemctl restart works too, though ifdown and ifup on the interface will work more selectively.

[Paweł Madej]

thx @Grant. adding flush made this work

[Diego Duarte]

In Ubuntu 16.04 and newer flush is necessary!

[twoleggedhorse]

ifcace should be iface on line 5

[cp3]

@twoleggedhorse: Fixed the typo for the answer but I had to add a few # in the first line because you cannot have an edit without at least 6 changed characters that are not whitespace

[ZhaoGang]

does not work in my VMWare player with ubuntu16.04

[lewis4u]

I suppose you didn't configure the network properly in VM-Ware Player.... but your bigger problem is: Why do you still use Ubuntu 16.04... The support is "end of life"...