Confused about IPv6

I'm very comfortable with 'ifconfig', 'route' and 'iptables' as applied
to IPv4. However, so far I've failed to get two IPv6 machines on the
same LAN to ping each other.

My ISP doesn't allocate me an IPv6 range. My house Linux gateway gets a
dynamic IPv4 address from them via DHCP, and does DHCP and local-DNS for
the machines on my house LAN, giving them RFC1918 static assignments by
recognising MACs, and doing NAT for them.

I'd like to arrange it so that home machines can get a static IPv6
address from the gateway too, and know that the gateway can route from
them to the rest of IPv6 space.

I've looked through what documentation I can find online and have now
managed to get the gateway talking to the rest of the IPv6 Internet by
means of 'ip' commands that add a tunnel mode sit and going via
192.88.99.1 which ends up going via a gateway that's not many hops away.
So, the gateway can ping external IPv6 hosts just fine.

What I don't know is how to set things up where my home machines get a
static internal address but can also talk to external hosts. I wonder if
they should have both a RFC4193 local address (range) as their internal
static one for talking with one another and a somewhat-dynamic 2002:
address that follows some fraction of whatever range is implied by the
gateway's ISP-provided IPv4 address for talking to outside hosts? What
would a /etc/network/interfaces look like for the gateway and home
machines in this case, or whatever case is the sane version of what I
describe, and what radvd.conf might work?

I don't need to be given exact command lines for every bit, but I'd be
very glad to learn broadly what to aim for and to see examples of
similar configurations others have.

-- Mark

Mark T.B. Carroll wrote:

> I don't need to be given exact command lines for every bit, but I'd be
> very glad to learn broadly what to aim for and to see examples of
> similar configurations others have.

- if you don't have own IPv6 Addresses use Prefixes within 2001:db8::/32
- read the Linux IPv6 Howto http://www.bieringer.de/linux/IPv6/
- if you want get real IPv6 connectivity with dynamic IPv4 Addresses (Tunnels)
you need Tunnelbrokerclients like tspc or AICCU.
- ask your Tunnelprovider for your own /48 Prefix


Regards
Friedemann