[325] in North American Network Operators' Group
Re: CIDR FAQ
daemon@ATHENA.MIT.EDU (Jon Zeeff)
Thu Aug 17 14:38:26 1995
From: jon@branch.com (Jon Zeeff)
To: yakov@cisco.com (Yakov Rekhter)
Date: Thu, 17 Aug 1995 14:24:02 -0400 (EDT)
Cc: davids@on-ramp.ior.com, rv@zeus.nic.dtag.de, owen@DeLong.SJ.CA.US,
inet-access@earth.com, nanog@merit.edu, local-ir@ripe.net
In-Reply-To: <199508171803.LAA13970@hubbub.cisco.com> from "Yakov Rekhter" at Aug 17, 95 11:03:36 am
> > But isn't it possible to have a router convert from an IPv6 address
> > with provider bits to an IPv4 address by simply stripping all but the
> You can't strip a non-zero part of IPv6 address, as this would cause
> transport layer pseudo-header checksum to fail.
Unless you recalulate the checksum. There are products out now
that do similar things (like map a large set of private ip addresses to
a single class C).
