On Aug 23, 2009, at 4:19 PM, Jari Arkko wrote:
Further discussion would be useful on one issue that was brought to
our attention.
The issue is the status of 128.66.0.0/16. This block, TEST-B, has
been used for example purposes. There is no RFC that talks about
this block, but my understanding is that IANA/ARIN have marked it as
reserved. If you search the Internet you will find at least some
number of examples and firewall rule sets that use this block, but I
have no good idea about how widespread such usage is.
What should we do about this block? Some of the potential answers
include documenting its role, marking it as reserved but deprecating
its use in examples, and returning it to the free pool immediately
(with a warning sign about possible filtering problems).
In whois, it's listed as
NetRange: 128.66.0.0 - 128.66.255.255
CIDR: 128.66.0.0/16
NetName: TEST-B
NetHandle: NET-128-66-0-0-1
Parent: NET-128-0-0-0-0
NetType: IANA Special Use
Comment:
RegDate: 1993-03-18
Updated: 2002-09-12
RFC3330 says
128.0.0.0/16 - This block, corresponding to the numerically lowest of
the former Class B addresses, was initially and is still reserved by
the IANA. Given the present classless nature of the IP address space,
the basis for the reservation no longer applies and addresses in this
block are subject to future allocation to a Regional Internet Registry
for assignment in the normal manner.
------
If there is no RFC, IANA or ARIN documentation assigning it to some
use, why not put it into the free pool ? Users have been warned for 7
years now.
Regards
Marshall
Jari
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