Help setting up Ubuntu with multiple virtual interfaces

[glimberg]

Hi all.  Newb question here.  I hope you don't mind 

I've recently delved into the world of ipv6 and have my tunnel working quite nicely on my VPS Ubuntu 10.04 server.  As with all accounts on here, I was assigned a routed /64.  The server serves up multiple domain names.  Ideally what I'd like to do is have each domain on a unique ipv6 address from my /64 block.  With ipv4, I'd create virtual interfaces such as eth0:0, eth0:1, eth0:2 each with their own IP address.  I'm lost as to how to configure this with ipv6 though.

Here are the contents of my current /etc/network/interfaces file:

Code:

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
        address xxx.xxx.xxx.xxx
        netmask 255.255.255.0
        gateway xxx.xxx.xxx.xxx

auto hetunnel
iface hetunnel inet6 v4tunnel
        address 2001:470:1f04:xxxx::2
        netmask 64
        ttl 64
        gateway 2001:470:1f04:xxxx::1
        endpoint 72.52.104.74

What do I need to do to it in order to achieve what I'm looking to do?

Thanks in advance.

Grant

[jimb]

Just slap as many IPv6 addresses on the eth0 interface as you need.  You can also use them on bridged guest OSes virtual nics if it's a VM host.

I think in the interfaces file you just use multiple address statements.

Manually, you'd use "ip addr add ..."

[glimberg]

When adding the following to my /etc/network/interfaces:

Code:

auto eth0:0
iface eth0:0 inet6 static
        address 2001:470:1f05:xxxx::1
        netmask 64

I get the following error when attempting `sudo ifup eth0:0`:

Code:

SIOCSIFFLAGS: Cannot assign requested address
Failed to bring up eth0:0.

Not sure what's going on here.

[jimb]

Don't use eth0:0.  Just use eth0.  The : subinterface thing is "obsolete".

I believe you can just put multiple address directives under each interface.