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I am wondering with the current setup to save costs on ip addresses could
NAT be used or would the data center block natted traffic?

On Mon, Nov 26, 2012 at 4:39 PM, Florian Effenberger <> wrote:


we received the news that our ISP will be much more restrictive about IPv4
addresses in the near future, probably beginning in early December.

Right now, their pricing is 1 € per extra IP, and for our subnet with 30
usable IPs, we pay 22,50 € per month.

In the worst case, they will charge 5 € per extra IP and month in the
future, which woulde produce additional costs of more than 100 € per month.
We have no pricing details yet, so the above is based on assumptions.

However, this will mean that very shortly, we might run into the situation
that we can not provide IPv4 addresses generously anymore for virtual
machines, not even for all productive ones.

Ideally, we can at least migrate some internal services exclusively to
IPv6, but this won't work for all public services. In this case, we then
might have to use port forwarding and proxying.

I hope we can avoid most inconveniences, and keep a safe amount of IPv4
addresses, but I wanted to warn all of you already now that the luxurious
situation we are in at the moment might end soon.

It definitely makes sense for anyone who runs testing VMs or internal
services to make yourself comfortable with IPv6 *now*. Should your ISP not
provide native IPv6 connectivity (which unfortunately is true for most ISPs
around the globe), have a look at, or google for "6to4".


Florian Effenberger, Chairman of the Board (Vorstandsvorsitzender)
Tel: +49 8341 99660880 | Mobile: +49 151 14424108
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The Document Foundation, Zimmerstr. 69, 10117 Berlin, Germany
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Jonathan Aquilina

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