[ale] null.null.host oddity

[Chris Ricker]

On Sat, 15 Feb 2003, John Wells wrote:

> For whatever reason, BellSouth has set up these dummy entries for private
> net address space.  Or, they have it set up to just do a modified dummy
> reply for lookups on the private address space. Have no idea why, but
> perhaps someone else on the list could add an explanation.

Although RFC 1918 source addresses should never appear on inter-networks,
the reality is that they do -- common estimates are usually on the order
of 10% of all Internet traffic has non-routable source addresses of one
sort or another because people configure NAT incorrectly, don't do
egress filtering at all, etc., for example. BS probably just added the
names so they could see leakage by name rather than IP....

later,
chris
_______________________________________________
Ale mailing list
Ale at ale.org
http://www.ale.org/mailman/listinfo/ale