nanog mailing list archives
Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer...
From: William Herrin <bill () herrin us>
Date: Fri, 11 Feb 2011 11:51:40 -0500
On Thu, Feb 10, 2011 at 10:46 PM, Ricky Beam <jfbeam () gmail com> wrote:
On Thu, 10 Feb 2011 11:43:50 -0500, Matthew Kaufman <matthew () matthew at> wrote:There is no one universal "global routing table". They probably appear in someone's routing table, somewhere... just not yours.Using public address space for private networking is a gross misuse of the resource.
Ricky, One example I heard was a generic financial exchange connected to perhaps a hundred other companies. Those companies also connect to the Internet but the exchange itself does not. It's valuable for the exchange to use addressing which will not conflict with any of its customers' RFC1918 use or overlap any Internet destinations they want to access. This is why ULA in IPv6 has statistical uniqueness -- so that organizations with similar requirements don't need to use Internet-routable addresses. We can't backport ULA into IPv4 private addressing; there aren't enough addresses for the math to work. So we either make such folks jump through all kinds of hoops to get their networks to function, or we assign addresses that could otherwise be used on the big-I Internet. Regards, Bill Herrin -- William D. Herrin ................ herrin () dirtside comĀ bill () herrin us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004
Current thread:
- Re: PSTN address expansion, (continued)
- Re: PSTN address expansion Jack Bates (Feb 11)
- Re: PSTN address expansion Jack Bates (Feb 11)
- Re: PSTN address expansion Jeff Kell (Feb 11)
- Re: PSTN address expansion Joel Jaeggli (Feb 11)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... David Conrad (Feb 10)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Ricky Beam (Feb 10)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Arturo Servin (Feb 11)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Josh Smith (Feb 11)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Arturo Servin (Feb 11)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Owen DeLong (Feb 10)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... William Herrin (Feb 11)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Michael Dillon (Feb 11)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Iljitsch van Beijnum (Feb 17)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... John Curran (Feb 17)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Mark Andrews (Feb 17)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Robert E. Seastrom (Feb 17)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Valdis . Kletnieks (Feb 17)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... John Curran (Feb 17)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Steven Bellovin (Feb 17)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... Jack Bates (Feb 17)
- Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer... John Curran (Feb 17)