(I'm not a ULA fan, it's going to cause problems.. but) On Wed, Jan 20, 2021 at 7:16 PM John R Levine <johnl@xxxxxxxxx> wrote: > > > No. Collissions are actually almost guaranteed (birthday paradox). > > When I do the birthday paradox calculation, I find that the chances that > 100,000 random numbers each 40 bits long are all different is about 95%. > I'll take those odds. > Warren made this website/application/etc: http://mac-collision-probability.appspot.com/calculate which was used for privacy address problems/discussions, but... if you make it 40 bits and 100,000 stations apparently you'll get a collision 1 out of 220 times. I think that means that ULA network selections COULD overlap at about the same rate. There are ~1.4m small businesses in the US, if they all chose ULA that's more than a few collisions. Collisions matter because when 2 networks that collide come together it's messy :( to untangle and decide whom is going to do what :( it's also not always obvious that it's happening :( until something crashes :( > Regards, > John Levine, johnl@xxxxxxxxx, Taughannock Networks, Trumansburg NY > Please consider the environment before reading this e-mail. https://jl.ly >
