RE: Fwd: Broadband Forum liaison to IETF on IPv6 security

["Dunn, Jeffrey H." <jdunn at mitre.org>]

Hemant,

Fair enough. I suppose that there are enough /55's or /56's that every household can have one; however, it does make "right sizing" the initial allocation to the ISP very important. We would not want to be allocating non-contiguous /28's on a regular basis :-)

Best Regards, 
  
Jeffrey Dunn 
Info Systems Eng., Lead 
MITRE Corporation.
(301) 448-6965 (mobile)


-----Original Message-----
From: Hemant Singh (shemant) [mailto:shemant at cisco.com] 
Sent: Friday, November 06, 2009 8:07 PM
To: Dunn, Jeffrey H.; Wes Beebee (wbeebee); Antonio Querubin
Cc: Thomas Narten; Fred Baker (fred); 6man-ads at tools.ietf.org; SAVI Mailing List; william.allen.simpson at gmail.com; Hesham Soliman; IETF at core3.amsl.com; Erik Nordmark; savi-ads at tools.ietf.org; IPv6 Operations; Susan Thomson (sethomso); v6ops-ads at tools.ietf.org; Robin Mersh; Mailing List; Susan at core3.amsl.com; JINMEI Tatuya / 神明達哉
Subject: RE: Fwd: Broadband Forum liaison to IETF on IPv6 security

Jeffrey,

The answer to your question is a yes.  Alternatively, the ISP may just dole out a delegated prefix shorter than a /64 and the CPE Rtr has to live with it but the ISP may use something like a /55 that gives sufficient number of links in the home LAN.  I will reply to any more discussion on this thread once I reach Hiroshima. 

Hemant

-----Original Message-----
From: Dunn, Jeffrey H. [mailto:jdunn at mitre.org] 
Sent: Friday, November 06, 2009 7:31 PM
To: Hemant Singh (shemant); Wes Beebee (wbeebee); Antonio Querubin
Cc: Thomas Narten; Fred Baker (fred); 6man-ads at tools.ietf.org; SAVI Mailing List; william.allen.simpson at gmail.com; Hesham Soliman; IETF at core3.amsl.com; Erik Nordmark; savi-ads at tools.ietf.org; IPv6 Operations; Susan Thomson (sethomso); v6ops-ads at tools.ietf.org; Robin Mersh; Mailing List; Susan at core3.amsl.com; JINMEI Tatuya / 神明達哉; Dunn, Jeffrey H.
Subject: RE: Fwd: Broadband Forum liaison to IETF on IPv6 security

OK. Then the CPE router has a unique /64 for all of its broadcast domains? Does that mean that the customer needs to tell the ISP how many /64 prefixes they need?

Best Regards, 
  
Jeffrey Dunn 
Info Systems Eng., Lead 
MITRE Corporation.
(301) 448-6965 (mobile)