Get IP Address of Anyone Connected to my Arduino set up as server

Using Arduino Networking, Protocols, and Devices
34

i tried this code but the only ip it show's is allways : 254.237.192.1

where is the problem in the code?

byte client_ip[4];

..

client.IP_address(&client_ip[0]);
int c1=client_ip[1];
int c2=client_ip[2];
int c3=client_ip[3];
int c4=client_ip[4];
Serial.println("");
Serial.print(c1);
Serial.print(".");
Serial.print(c2);
Serial.print(".");
Serial.print(c3);
Serial.print(".");
Serial.print(c4);