[ppml] [address-policy-wg] Those pesky ULAs again

Randy,

On Mon, May 28, 2007 at 10:26:19PM -1000, Randy Bush wrote:
> >> ok, i give.  if ula address space is assigned/managed by 
> >> registries, how is it actually different from pi space?
> > Basically ULA space has the same 'routability' as RFC1918 space
> 
> which is a benefit because ...?  rfc 1918 space is a hack to deal
> with an address space shortage.  we are told ipv6 space is
> effectively infinite.  hence we do not need rfc 1918 style space.

The advantage of RFC 1918 space that ULA (non-central) provides is you
don't have to talk to anyone to get your addresses. This is nice for
things like labs, prototype environments, people who just want to use
IPv6 within their home/office but don't have IPv6 connectivity, and so
on.

This advantage will get smaller over time, as most people will have a
/48 from their Internet provider "by default", and can use that space
for disconnected environments; 65536 is a lot of lab networks! :)

There are no advantages to ULA (central), as I see it. Which is why I
oppose it.

--
Shane