like using serial read() fill array like
mycode is
// Time Server Port
#define NTP_PORT 123
// Time Server MAC address
byte mac[] = { // LM: Substitute fake MAC address associated with IP
//0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF
0x02, 0xB6, 0x7E, 0x00, 0x00, 0x02 };
// NTP Server IP Address
IPAddress ip(192, 168, 1, 225); // LM: DHCP address assigned by Asus router. Change this
// as appropriate for the implementation context.