Private use of non-RFC1918 IP space

Jeroen Massar jeroen at
Tue Feb 3 23:17:58 UTC 2009

Skeeve Stevens wrote:
[please fix your line length, my screen is still not a 100"]

> Owned by an ISP?  It isn't much different than it is now.
> As long as you are multi-homed you can get a small allocation (/48),
> APNIC and ARIN have procedures for this.
> Yes, you have to pay for it, but the addresses will be yours, unlike
> the RFC1918 ranges which is akin to 2.4Ghz wireless.. lets just share
> and hope we never interconnect/overlap.
> I can't find a RFC1918 equivalent for v6 with the exception of
> 2001:0DB8::/32# which is the ranges that has been assigned for
> documentation use and is considered to NEVER be routable.  In that /32
> are 65536 /48's... way more than the RFC1918 we have now.

Documentation is exactly that: Documentation.
Do not EVER use that in a real box.

If you need 'RFC1918 alike' space then go for ULA (RFC4193).
Also see for a semi-registered
version of that. If you want "guaranteed unique" then go to a RIR.

> If I was going to build a v6 network right now, that was purely
> private and never* going to hit the internet, and I could not
> afford to be a NIC member or pay the fees... then I would be using
> the ranges above.... I wonder if that will start a flame war *puts on
fire suit*.

Google goes straight through that suit, I suggest you use it and read up
on IPv6. Even the Wikipedia entry contains this information.
google(rfc1918 ipv6) or


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