On Tue, Nov 13, 2012 at 11:06:04PM -0800, Sean Chittenden wrote:
> Where does it say that it shouldn't be used? Which RFC & ?? There are plenty
> of RFCs and I haven't exhaustively read things, so I reserve the right to be
> wrong & corrected, but I haven't seen anything that says, "do not use
> 0.0.0.0/8." 0.0.0.0/32, yes, that's a reserved and special IP address, but
> the remainder of the /8? It's a stretch to argue that it can't be used.
RFC1122 Section 3.2.1.3 (which RFC5735 references directly)
(a) { 0, 0 }
This host on this network. MUST NOT be sent, except as
a source address as part of an initialization procedure
by which the host learns its own IP address.
See also Section 3.3.6 for a non-standard use of {0,0}.
(b) { 0, <Host-number> }
Specified host on this network. It MUST NOT be sent,
except as a source address as part of an initialization
procedure by which the host learns its full IP address.
So a sender MUST NOT use 0.0/16 or 0/8 as destination, ever...
Daniel
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