Debian IPv6

From Wiki

A Debian Squeeze machine will automatically assign itself an IPv6 address. Sometimes this is exactly what is needed, but other times I want to assign a specific one.

• In /etc/network/interfaces:

iface eth0 inet6 static
 address 2001:470:903f::100
 netmask 64
 gateway 2001:470:903f::1

(substituting eth0, netmask, etc. as needed)