Network Settings2016/04/21

[1]	Change to static IP addres if you use Ubuntu as a server. "ens3" is different on each environment, replace it to your own one.

root@dlp:~#

vi /etc/network/interfaces

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto ens3

# comment out

iface ens3 inet dhcp

# add these lines

iface ens3 inet static
address 10.0.0.30

# IP address

network 10.0.0.0

# network address

netmask 255.255.255.0

# subnet mask

broadcast 10.0.0.255

# broadcast address

gateway 10.0.0.1

# default gateway

dns-nameservers 10.0.0.10

# name server

# reboot once

root@dlp:~#

reboot

[2]	Disable IPv6 if not needed.

root@dlp:~#

echo "net.ipv6.conf.all.disable_ipv6 = 1" >> /etc/sysctl.conf

root@dlp:~#

sysctl -p

root@dlp:~#

ip addr

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 52:54:00:ad:7d:9c brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.30/24 brd 10.0.0.255 scope global ens3
       valid_lft forever preferred_lft forever

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