nanog mailing list archives
Re: Using /126 for IPv6 router links
From: Rubens Kuhl <rubensk () gmail com>
Date: Mon, 25 Jan 2010 00:21:51 -0200
During the days of the IPng directorate, quite a number of different alternatives were considered. At one point, there was a compromise proposal known as the "Big 10" design, because it was propounded at the Big Ten Conference Center near O'Hare. One feature of it was addresses of length 64, 128, 192, or 256 bits, determined by the high-order two bits. That deal fell apart for reasons I no longer remember; SIPP was the heir apparent at that point. Scott and I pushed back, saying that 64 bits was too few to allow for both growth and for innovative uses of the address. We offered 128 bits as a compromise; it was accepted, albeit grudgingly. The stateless autoconfig design came later. --Steve Bellovin, http://www.cs.columbia.edu/~smb
This historical record finally made me understand why we have up to /128 prefixes with /128 addresses instead of what would suit best stateless autoconfig: up to /64 prefixes with /128 addresses. Rubens
Current thread:
- Re: Using /126 for IPv6 router links, (continued)
- Re: Using /126 for IPv6 router links Owen DeLong (Jan 23)
- Message not available
- Re: Using /126 for IPv6 router links Larry Sheldon (Jan 23)
- Re: Using /126 for IPv6 router links Valdis . Kletnieks (Jan 24)
- Re: Using /126 for IPv6 router links Larry Sheldon (Jan 24)
- Re: Using /126 for IPv6 router links Owen DeLong (Jan 24)
- Re: Using /126 for IPv6 router links Mark Smith (Jan 24)
- Re: Using /126 for IPv6 router links Steven Bellovin (Jan 24)
- Re: Using /126 for IPv6 router links Valdis . Kletnieks (Jan 24)
- Re: Using /126 for IPv6 router links Steven Bellovin (Jan 24)
- Re: Using /126 for IPv6 router links Mark Smith (Jan 24)
- Re: Using /126 for IPv6 router links Rubens Kuhl (Jan 24)
- Re: Using /126 for IPv6 router links Andy Davidson (Jan 25)
- Re: Using /126 for IPv6 router links Richard A Steenbergen (Jan 25)
- RE: Using /126 for IPv6 router links TJ (Jan 25)
- Re: Using /126 for IPv6 router links Richard A Steenbergen (Jan 25)
- RE: Using /126 for IPv6 router links TJ (Jan 25)
- Re: Using /126 for IPv6 router links Tim Durack (Jan 25)
- Re: Using /126 for IPv6 router links Ryan Harden (Jan 25)
- Re: Using /126 for IPv6 router links Tim Durack (Jan 25)
- Re: Using /126 for IPv6 router links Nathan Ward (Jan 25)
- Re: Using /126 for IPv6 router links Tim Durack (Jan 26)