Change interval to 1 hour.

This roughly rotates through all the mac addresses in the list in about 16 hours.

user/config_flash.c

@@ -51,8 +51,9 @@ config_load_default(sysconfig_p config)
 
   config->current_mac_address = 0;
   // Interval to change mac address in seconds
-  // Default: 28800 (8 hours)
-  config->mac_change_interval = 28800;
+  // Default: 3600 (1 hour)
+  // This should rotate every mac address in the list roughly every 16 hours.
+  config->mac_change_interval = 3600;
 
   // list of mac addresses
   // from https://docs.google.com/spreadsheets/d/1su5u-vPrQwkTixR6YnOTWSi_Ls9lV-_XNJHaWIJspv4/edit#gid=0