RANDOM_IP_POOL=['192.168.10.222/0']
def __get_random_ip():
  str_ip = RANDOM_IP_POOL[random.randint(0,len(RANDOM_IP_POOL) - 1)]
  str_ip_addr = str_ip.split('/')[0]
  str_ip_mask = str_ip.split('/')[1]
  ip_addr = struct.unpack('>I',socket.inet_aton(str_ip_addr))[0]
  mask = 0x0
  for i in range(31, 31 - int(str_ip_mask), -1):
    mask = mask | ( 1 << i)
  ip_addr_min = ip_addr & (mask & 0xffffffff)
  ip_addr_max = ip_addr | (~mask & 0xffffffff)
  return socket.inet_ntoa(struct.pack('>I', random.randint(ip_addr_min, ip_addr_max)))

 192.168.10.175  192.168.10.29  
 192.168.10.30  192.168.10.207 
 192.168.10.248  192.168.10.145 
 192.168.10.168  192.168.10.223 
 192.168.10.66  192.168.10.138 
 192.168.10.99  192.168.10.136 
 192.168.10.147  192.168.10.244 
 192.168.10.73  192.168.10.180