
On Sun, Apr 30, 2023 at 12:18:26AM -0400, Val Kulkov via talk wrote:
Next time you connect to some public WiFi network, execute "ifconfig" to see your IP address and your subnet. In my observations, airports WiFi networks typically use the /22 subnets (up to 1022 addresses). Most restaurants, McDonalds included, use /24 subnets, but I have seen ones that use /23. I have not yet seen a public Wifi network that uses a /21 subnet providing up to 2046 addresses.
I have seen /16 subnets on wifi networks. I think some are even bigger than that. Some of the stadium setups are insane. 2000 APs is not unusual in a single network. If you have 50000 people and most of them have a cell phone and decide to connect to the network, you get a lot of devices. No idea why people go to events with expensive tickets and then spend so much time on social media while there. -- Len Sorensen