i read this in some book:
i have ip addrees 172.31.128.255/18 and it says that its unicast address!
how can that be? it says also that its broadcast address is 172.31.131.255.
from my calculations the broadcast is 172.31.191.255 and in the address
172.31.128.255 the 3rd octet is network number of sort so how can that be a unicast?!
please help me