How to get Subnet Mask and Broadcast Address of Personal Hotspot in iOS

Question

I need to find out a way to find out subnet mask and broadcast address of my personal hotspot in iOS.

I am using following way to find out IP address of device if it

Answer 1

where address is assigned, just insert:

netmask = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_netmask)->sin_addr)];