Checksum (2 bytes)
Length (2 bytes)
Transport Control (1 byte)
Destination NetWork Address (4 bytes)
Destination Node Address (6 bytes)
21
Destination Socket (2 bytes)
Source NetWork Address (4 bytes)
X : , , . V:. ... -v,;...... ......:
Source Node Address (6 bytes)
2 ................................................................................................
Source Socket (2 bytes)
^.........................H......—— 1
Data
(variable, up to 546 bytes)