Ubuntu IPv6 Config

Suppose we want to keep dhcp configuration for IPv4 and want to use a static IP for IPv6

1. Open '/etc/network/interfaces'

sudo gedit /etc/network/interfaces

2. Edit it

auto eth0
iface eth0 inet dhcp

iface eth0 inet6 static
address 2001::1
netmask 64

3. Restart networking

sudo /etc/init.d/networking restart