nanog mailing list archives
Re: CIDR FAQ
From: Yakov Rekhter <yakov () cisco com>
Date: Thu, 17 Aug 95 11:37:44 PDT
Jon,
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 theYou 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).
You're absolutely correct -- Network Address Translation (NAT) boxes do this. Moreover, the use of NAT boxes allows to significantly reduce the problem of IPv4 address space depletion (as sites that use NAT boxes can use private address space out of RFC1597), so that we wouldn't run out of IPv4 addresses any time soon. Yakov.
Current thread:
- Re: CIDR FAQ, (continued)
- Re: CIDR FAQ Sean Doran (Aug 15)
- Re: CIDR FAQ Owen DeLong (Aug 16)
- Re: CIDR FAQ Yakov Rekhter (Aug 16)
- Re: CIDR FAQ Ruediger Volk (Aug 16)
- Re: CIDR FAQ bmanning (Aug 16)
- Re: CIDR FAQ David J. Schmidt (Aug 16)
- Re: CIDR FAQ Yakov Rekhter (Aug 17)
- Re: CIDR FAQ David J. Schmidt (Aug 17)
- Re: CIDR FAQ Yakov Rekhter (Aug 17)
- Re: CIDR FAQ Jon Zeeff (Aug 17)
- Re: CIDR FAQ Yakov Rekhter (Aug 17)
- Re: CIDR FAQ Dave Siegel (Aug 17)
- Re: CIDR FAQ bmanning (Aug 17)
- Re: CIDR FAQ Dave Siegel (Aug 17)
- Re: CIDR FAQ Gary Wright (Aug 17)
- Re: CIDR FAQ Curtis Villamizar (Aug 17)
- Re: CIDR FAQ Arnold Nipper (Aug 18)