Networking2012/04/27

[1]	Change to static IP addres if you use Ubuntu 12.04 as a server.

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).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0

# make it comment

iface eth0 inet dhcp

# add these lines

iface eth0 inet static
address 10.0.0.30

# define IP address

network 10.0.0.0

# define network address

netmask 255.255.255.0

# define subnet mask

broadcast 10.0.0.255

# define broadcast address

gateway 10.0.0.1

# define default gateway

dns-nameservers 10.0.0.10

# define name server

root@dlp:~#

ifdown eth0 && ifup eth0

[2]	Disable IPv6 if not needed.

root@dlp:~#

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

root@dlp:~#

reboot

root@dlp:~#

ifconfig

eth0      Link encap:Ethernet  HWaddr 00:16:36:13:5c:fc
          inet addr:10.0.0.30  Bcast:10.0.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:20 errors:0 dropped:0 overruns:0 frame:0
          TX packets:24 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1886 (1.8 KB)  TX bytes:1746 (1.7 KB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

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