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Persistent IPv6 Address

July 21, 2010 by Igor Drobot 1 Comment

I show you, how to add a secondary IPv6 Address to your existing one.
You need only to edit “vim /etc/network/interfaces” file and add the IPv6 networking configuration.

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# The loopback network interface
auto lo
iface lo inet loopback
 
# The primary network interface
auto eth0
iface eth0 inet static
 address 10.1.100.4
 gateway 10.1.100.1
 netmask 255.255.255.0
 pre-up modprobe ipv6
 post-up ip addr add 2001:470:1f0b:1514::4/64 dev eth0 
 post-up ip route add default via 2001:470:1f0b:1514::1 dev eth0

# The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 10.1.100.4 gateway 10.1.100.1 netmask 255.255.255.0 pre-up modprobe ipv6 post-up ip addr add 2001:470:1f0b:1514::4/64 dev eth0 post-up ip route add default via 2001:470:1f0b:1514::1 dev eth0

Another way to do the same:

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pre-up modprobe ipv6
 
iface eth0 inet6 static
 address 2001:470:1f0b:1514::4
 netmask 64
 gateway 2001:470:1f0b:1514::1

pre-up modprobe ipv6 iface eth0 inet6 static address 2001:470:1f0b:1514::4 netmask 64 gateway 2001:470:1f0b:1514::1

Also you can put the ipv6 module in to “/etc/modules” instead of “pre-up modprobe ipv6”

Test it:

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ping6 ipv6.google.com

ping6 ipv6.google.com

Some complexe example:

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# The loopback network interface
auto lo
iface lo inet loopback
 
# The primary network interface
allow-hotplug eth0
iface eth0 inet static
        address 188.40.116.234
        netmask 255.255.255.0
        network 188.40.116.0
        broadcast 188.40.116.255
        gateway 188.40.116.206
 
auto eth0:1
iface eth0:1 inet static
        address 192.168.2.70
        netmask 255.255.255.0
 
# IPv6 over tunnel-broker
auto he-ipv6
iface he-ipv6 inet6 v4tunnel
 endpoint   216.66.80.30
 ttl        255
 address    2001:470:1f0a:1604::2
 netmask    64
 mtu        1480
 post-up ip addr add 2001:470:1f0b:1604::1/64 dev eth0
 post-up ip route add ::/0 dev he-ipv6

# The loopback network interface auto lo iface lo inet loopback # The primary network interface allow-hotplug eth0 iface eth0 inet static address 188.40.116.234 netmask 255.255.255.0 network 188.40.116.0 broadcast 188.40.116.255 gateway 188.40.116.206 auto eth0:1 iface eth0:1 inet static address 192.168.2.70 netmask 255.255.255.0 # IPv6 over tunnel-broker auto he-ipv6 iface he-ipv6 inet6 v4tunnel endpoint 216.66.80.30 ttl 255 address 2001:470:1f0a:1604::2 netmask 64 mtu 1480 post-up ip addr add 2001:470:1f0b:1604::1/64 dev eth0 post-up ip route add ::/0 dev he-ipv6

Filed Under: Debian, IPv6, Linux, Networking Tagged With: Debian, interfaces, Ipv6, Linux, network, Ubuntu