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Re: IPv6 Support on Windows
From: Brandon Enright <bmenrigh () ucsd edu>
Date: Mon, 12 May 2008 00:27:26 +0000

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On Mon, 12 May 2008 00:51:53 +0100 or thereabouts jah
<jah () zadkiel plus com> wrote:

Great news nonetheless!  I'm looking forward to -iR support for -6 :)

cheers,

jah


- -iR will probably never be a v6 feature.  The whole notion of scanning
a whole network to find hosts (say, a /24) is gone with v6.  The
smallest local network offered by v6 is a /64 which simply can not be
scanned.

Now, there is more than likely going to be some sort of automatic DNS
AAAA name registration system which people (and Nmap) will still be able
to use to find hosts.  This may be similar to how reverse lookups work
today with IPv4.

Even scanning local networks will require Nmap to make use of the
multicast Neighbor Discovery (ND) protocol which is the v6 ARP
replacement.

For the foreseeable future though, scanning v6 hosts will be limited to
those you explicitly know about either by name or have out-of-band
knowledge of their v6 address.

v6 is awesome but makes our job as Nmap developers quite a bit harder.

Brandon

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