IANA reserved Address Space

David Schwartz davids at webmaster.com
Fri May 30 23:23:19 UTC 2003

> On Fri, 30 May 2003 Brennan_Murphy at NAI.com wrote:

> RFC1918 is a set number of IP addresses. If you are working on a private
> network lab that will be on the internet eventually or have parts on the
> internet and exceeds the total number of IPV4 addressing set aside in
> RFC1918, and IPV6 private addressing is not an option, what can you do? (I
> know it's a stretch, but I think it asks specifically what Brennan wants
> to know and what I'm curious about now)

	You request the number if IP addresses you actually need from IANA (or the
relevant registry). See RFC2050, which says:

   In order for the Internet to scale using existing technologies, use
   of regional registry services should be limited to the assignment of
   IP addresses for organizations meeting one or more of the following

      a)  the organization has no intention of connecting to
          the Internet-either now or in the future-but it still
          requires a globally unique IP address.  The organization
          should consider using reserved addresses from RFC1918.
          If it is determined this is not possible, they can be
          issued unique (if not Internet routable) IP addresses.


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