Reserved IPs [was: Home network - big question!]

[Brad Hards]

"Edward C. Lang" wrote:
> 
> Hi,
> 
> On Tue, Oct 16, 2001 at 04:39:12PM +1000, Matthew Hawkins wrote:
> > On Tue, 16 Oct 2001, David wrote:
> > > There are two ip blocks you can use for local networks, 192.168.x.x and
> > > 10.0.x.x (Not sure about this one).
> >
> > To quote from RFC 1918:
> >
> > The Internet Assigned Numbers Authority (IANA) has reserved the
> > following three blocks of the IP address space for private internets:
> >
> >       10.0.0.0    - 10.255.255.255  (10/8 prefix)
> >       172.16.0.0  - 172.31.255.255  (172.16/12 prefix)
> >       192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
> 
> There are bunches of reserved addresses. What are they all for?
> 
> Netblock: 1.0.0.0 - 1.255.255.255        Netname: RESERVED-9
> Netblock: 2.0.0.0 - 2.255.255.255        Netname: RESERVED-2
> Netblock: 5.0.0.0 - 5.255.255.255        Netname: RESERVED-5
> Netblock: 10.0.0.0 - 10.255.255.255      Netname: RESERVED-10
> Netblock: 23.0.0.0 - 23.255.255.255      Netname: RESERVED-23
> Netblock: 27.0.0.0 - 27.255.255.255      Netname: RESERVED-27
> Netblock: 31.0.0.0 - 31.255.255.255      Netname: RESERVED-31
> Netblock: 36.0.0.0 - 36.255.255.255      Netname: RESERVED-36
> Netblock: 37.0.0.0 - 37.255.255.255      Netname: RESERVED-37
> Netblock: 39.0.0.0 - 39.255.255.255      Netname: RESERVED-39A
> Netblock: 41.0.0.0 - 41.255.255.255      Netname: RESERVED-41A
> Netblock: 42.0.0.0 - 42.255.255.255      Netname: RESERVED-42
> Netblock: 58.0.0.0 - 58.255.255.255      Netname: RESERVED-58
> Netblock: 59.0.0.0 - 59.255.255.255      Netname: RESERVED-59
> Netblock: 60.0.0.0 - 60.255.255.255      Netname: RESERVED-60
> Netblock: 69.0.0.0 - 79.255.255.255      Netname: RESERVED-7
> Netblock: 82.0.0.0 - 95.255.255.255      Netname: RESERVED-11
> Netblock: 96.0.0.0 - 126.255.255.255     Netname: RESERVED-8
> Netblock: 128.0.0.0 - 128.0.255.255      Netname: RESERVED-3
> Netblock: 197.0.0.0 - 197.255.255.255    Netname: RESERVED-13
> Netblock: 201.0.0.0 - 201.255.255.255    Netname: RESERVED-14
> Netblock: 220.0.0.0 - 223.255.255.255    Netname: RESERVED
Also 169.254.0.0 - 169.254.255.255 which is reserved for local links.
http://search.ietf.org/internet-drafts/draft-ietf-zeroconf-ipv4-linklocal-04.txt

Has anyone played with this? Linux support?

I am thinking of those dodgy USB to USB connection cables (usbnet driver).
Maybe we can come up with something in the hotplug scripts to make this work
automagically....