Hi all,

I've only just joined the list - I'm mailing about the proposed abandoning
of site locals because I'd like to use them!

Basically I'm involved in setting up a community wireless network in
Southampton, UK.  The wireless network itself is a fully routed mesh
using private (10.13/16) addresses, the long term goal is to get ISPs
to provide internet gateways which you connect to via a VPN, PPPoE or
some other method, over which you get a public address.

We'd like to start running v6 on the network alongside the 10.13 addresses
and site-locals seem like the most sensible choice since it's the only
allocation of v6 addresses which is going to be available for us to use
and which is large enough to accomodate a /48 per access point (of which
there could be hundreds).  Obviously the same internet access model could
be used so you would get a public prefix over the PPPoE connection.

The site-local addresses would only be used for traffic contained within
the the wireless mesh, if some areas offered open internet access then
they could advertise an additional prefix routed from their own internet
connection, thus avoiding any NAT.

Well, that's my use and case for Site-Locals in a nut-shell!  I realise
that this type of deployment is quite a rare case, but I think it
represents a legitimate use of private addresses.

By the way, another option which would work very well in this type
of scenario is the geographical based addressing -
http://www.ietf.org/internet-drafts/draft-hain-ipv6-pi-addr-use-03.txt

Thanks,

Mike Saywell

Southampton Open Wireless Network
http://www.sown.org.uk

PhD Student, Dept ECS, Southampton UK.
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