On Thu, 26 Sep 2013, Jamieson Becker wrote:
For a monitoring system at a US cable company, we were shocked to discover that not only did they reuse entire 10x networks (so IP's were not sufficiently unique even within a given region),
perfectly permissible under RFC 1918 ... consider the number of residential routers using 192.168.0.x, or all the Apple kit using 10.0.1.x
but the customer premise equipment (CPE, like cable boxes) would re-use MAC addresses!
perfectly permissible -- MAC addresses are not meaningful outside a network segment. The little embedded devices of growing popularity (some of the low end Raspberry Pi type devices with IP stacks) often reuse the same one, because it simplifies software design and saves a dime a unit by omitting the non-volatile store needed to carry such around persistently
-- Russ herrold _______________________________________________ Assimilation mailing list - Discovery-Driven Monitoring [email protected] http://lists.community.tummy.com/cgi-bin/mailman/listinfo/assimilation http://assimmon.org/
