[Aaron.Graeve]

I think I should chime in with why I spit-balled the 1 in 650,000 odds. I was basing this on some (rather shaky) assumptions about DHCP, scorekeeper tendencies, and the reader.

For the sake of laziness, I assumed that the IP addresses the FMS is handed by DHCP are uniformly distributed at least in the first two bytes. I also assumed that the reader (the "your" in the quote) has one team association and does not care about the other teams. Lastly, I assumed that scorekeepers check for an IP conflict 9 out of every 10 times they should (i.e. they forget 10% of the time).

In order for a reader's specific team to get an IP and subnet conflict using the assumptions above, the first octet of the IP would need to be 10 (a 1 in 256 chance), the second octet would need to be the reader's team's first two digits as applicable (another 1 in 256), and the third octet would need to be different from the last two digits of the reader's team number (255 out of 256). Taken together and based on the assumptions given, there should be a 1 in ~65,700 chance that the IP FMS gets from DHCP will conflict with a specific team IP (I truncated to two sig-figs just because). Given that the scorekeeper/FTA will catch an IP conflict 9 out of every 10 times, the odds that a conflict would impact a specific team would be reduced to 1 in ~650,000.

Overall, it is a very small chance that it will happen to you, but a not so small chance that it will happen to someone.

Another good example of the birthday paradox. Props to OP for the math and teachable moment.