IP Address Settings Static:
# /etc/network/interfaces
iface eth0 inet static
address a.b.c.d
netmask 255.255.255.0
gateway 192.168.0.1
IP Address Settings DHCP:
# /etc/network/interfaces
iface eth0 inet manual
Or
# /etc/network/interfaces
iface eth0 inet dhcp
Starting Ubuntu 18.04 LTS using netplan:
/etc/netplan/01-network-manager-all.yaml
network:
version: 2
renderer: networkd
ethernets:
enp1s0:
dhcp4: no
addresses: [192.168.1.222/24]
# gateway4: 192.168.1.1 --deprecated
routes:
- to: default
via: 192.168.1.1
nameservers:
addresses: [8.8.8.8,8.8.4.4]
apply the configuration:
netplan apply
or using NetworkManager
network:
version: 2
renderer: NetworkManager
and use command below to set ip:
nmcli con mod "Wired connection 1" ipv4.address 1.2.3.4/24 ipv4.gateway 1.2.3.4 ipv4.dns 1.2.3.4 ipv4.method manual
# write above command in one single line
Nameserver:
a) Ubuntu versions < 14.04
# /etc/resolv.conf
nameserver 8.8.8.8
nameserver 8.8.4.4
b) Ubuntu versions >= 14.04
# /etc/network/interfaces
dns-nameservers 8.8.8.8
Note: For raspbian, when using static ip, you must disable DHCP service in /etc/dhcpcd.conf, add this line:
denyinterfaces eth0
Update 13 Oct 18, raspbian now use dhcp5 so you need to edit/etc/dhcpcd.conf
# Example static IP configuration:
#interface eth0
#static ip_address=192.168.0.10/24
#static ip6_address=fd51:42f8:caae:d92e::ff/64
#static routers=192.168.0.1
#static domain_name_servers=192.168.0.1 8.8.8.8 fd51:42f8:caae:d92e::1