本题应有如下格式的输出（参考书上图 6-5）:
Version: 4
Header Length: 20 bytes
Diff Services: 0x00
Total Length: 52 bytes
Id: 1277
Flags: 0x02
Frament Offset: 0
TTL: 64
Protocol: 6
Header Checksum: 0x6cdd
Source: 192.168.2.100
Dest: 157.249.32.164
*/
Version: 4
Header Length: 20 bytes
Diff Services: 0x00
Total Length: 52 bytes
Id: 1277
Flags: 0x02
Frament Offset: 0
TTL: 64
Protocol: 6
Header Checksum: 0x6cdd
Source: 192.168.2.100
Dest: 157.249.32.164
*/
