Yeah wow 127/8, that one always amazed me, 16M addrs because it was computationally cheap to test for ((0x7f & addr) == 0x7f). I wonder what are the most 127.* addrs ever used by one site? I know there are some schemes which blackhole to 127.0.0.n incrementing n so the number of hits on each blackhole can be counted separately (more or less) but 16M? I doubt even 254 were used in those schemes very often. WWWT? (What Were We Thinking?) Oh well water under the bridge. On July 15, 2015 at 17:53 jfbeam@gmail.com (Ricky Beam) wrote:
On Wed, 15 Jul 2015 17:34:13 -0400, Owen DeLong <owen@delong.com> wrote:
That covers multicast and RFC-1918. Are there any other IPv4 segmentations that you can think of? ... Given that we came up with 3 total segmentations in IPv4 over the course
#1-3,#4 RFC-1918 is 3 "segments" and we recently added a 4th (for CGN). #5 Localhost (127/8) #6 Multicast (224/4) #7 "Class E" (240/4) #8 0/8 #9 255/8 (technically, part of class e, but it's called out specifically in various RFCs)
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