Re: I-D ACTION:draft-wilson-class-e-00.txt

On Wednesday 08 August 2007 10:14:03 ext Brian E Carpenter wrote:
> On 2007-08-07 16:15, Internet-Drafts@ietf.org wrote:
> > A New Internet-Draft is available from the on-line Internet-Drafts
> > directories.
> >
> >
> > 	Title		: Redesignation of 240/4 from 'Future Use" to "Limited Use for
> > Large Private Internets' Author(s)	: P. Wilson, et al.
> > 	Filename	: draft-wilson-class-e-00.txt
> > 	Pages		: 4
> > 	Date		: 2007-8-7
> >
> >    This document directs the IANA to designate the block of IPv4
> >    addresses from 240.0.0.0 to 255.255.255.255 (240.0.0.0/4) as unicast
> >    address space for limited use in large private Internets.
>
> It seems to me that we first need a discussion about why this space can't
> be released as public address space. Is it known to be already deployed
> as de facto private space?

Some widespread IPv4 stacks refuse to handle these addresses, so nobody would 
ever want to use them on the public IPv4 Internet.

---

C:\>ver

Microsoft Windows XP [Version 5.1.2600]

C:\>ping -n 1 247.1.2.3

Pinging 247.1.2.3 with 32 bytes of data:

Destination specified is invalid.

Ping statistics for 247.1.2.3:
    Packets: Sent = 1, Received = 0, Lost = 1 (100% loss),

---

% uname -ro
2.6.22-8-generic GNU/Linux
% ping 247.1.2.3
connect: Invalid argument

-- 
Rémi Denis-Courmont

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