I might note that the more common term for what you're calling "stolen" address space is squat space, but that's a minor nit at best.
Also, I think it's important to make a distinction between setups where there are no global addresses on a given router at all vs situations where the router has one or more loopbacks or other interfaces which are publicly routable, but the individual PTP interfaces are using 1918 space (or are configured with "unnumbered"). I think that this is equally uncommon within a tier-1 ISP, but some of the accompanying problems can be managed better with configuration tweaks to force the box to use a certain source address for "from us" packets. This also helps in situations where ISIS core hiding is being used, since if a traceroute is sourced from the wrong IP, the boxes on the path may not know the route back to it and the trace fails in similar fashion. Your illustration of problems with traceroute would be one scenario that might benefit from this variant, assuming that the specific implementation in question can be configured to respond using a specific address as the source IP, rather than simply responding on whatever the ingress interface's IP address is. You may want to discuss this in section 11. Thanks, Wes George From: grow-boun...@ietf.org [mailto:grow-boun...@ietf.org] On Behalf Of Anthony Kirkham Sent: Friday, September 09, 2011 12:28 AM To: grow@ietf.org; grow-cha...@tools.ietf.org Subject: [GROW] Final feedback please - kirkham-private-ip-sp-cores All, I have just posted a new draft. There has only been one minor modification. Filename: draft-kirkham-private-ip-sp-cores Revision: 06 Title: Issues with Private IP Addressing in the Internet Creation date: 2011-09-09 WG ID: Individual Submission Number of pages: 13 I believe this is ready for publication. Any advice on the next step would be appreciated. Regards Tony K -- [cid:image001.gif@01CC7F6E.E9BD9E30] Anthony Kirkham Solution Architect World Wide Security Service Practice tkirk...@cisco.com<mailto:tkirk...@cisco.com> Phone: +61 (0)7 3238 8203 Mobile: +61 (0)401 890 494 CISSP, CCIE# - 1378 Level 12, 300 Adelaide Street Brisbane, Qld, 4000 Australia Cisco home page<http://www.cisco.com/global/AU/> ________________________________ This E-mail and any of its attachments may contain Time Warner Cable proprietary information, which is privileged, confidential, or subject to copyright belonging to Time Warner Cable. This E-mail is intended solely for the use of the individual or entity to which it is addressed. If you are not the intended recipient of this E-mail, you are hereby notified that any dissemination, distribution, copying, or action taken in relation to the contents of and attachments to this E-mail is strictly prohibited and may be unlawful. If you have received this E-mail in error, please notify the sender immediately and permanently delete the original and any copy of this E-mail and any printout.
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