IPv6 : the next header

The IPv6 header, shown in the IPv6 chapter of Computer Networking: Principles, Protocols and Practice contains a Next Header field that usually indicates the protocol used for the packet payload.


Next Header for a packet carrying a TCP segment

Can you infer the Next Header field of this packet knowing that it contains a TCP segment.

# Length Resumé Status
0 72 bytes <TCP: ACK, PSH, SEQ: 2730211067, ACK: 1456042411, TS>  

0000  600000000043??35  2a032880f01b0001  
0010  faceb00c00000001  200106a8308f0002  
0020  48e995ae3a92922d  01bbf3d0a2bbb6fb  
0030  56c971ab801801a6  f0ff00000101080a  
0040  78b9bd42473e3218                    

0000  `....C?5*.(.ð...
0010  úΰ..... ..¨0...
0020  Hé.®:..-.»óТ»û
0030  VÉq«...¦ðÿ......
0040  x¹½BG>2.        
  • IPv6:
    • Version: 6
    • Traffic Class UB: 0
    • Traffic Class LB: 0
    • Flow Label UB: 0
    • Flow Label LB: 0
    • Payload Length: 67
    • Next Header:
    • Hop Limit: 53
    • Source Address: 2a03:2880:f01b:1:face:b00c:0:1
    • Destination Address: 2001:6a8:308f:2:48e9:95ae:3a92:922d
    • Payload: TCP
      • Source Port: 443
      • Destination Port: 62416
      • Sequence Number: 2730211067
      • Acknowledgment Number: 1456042411
      • Data Offset: 8
      • Reserved: 0
      • NS: 0
      • CWR: 0
      • ECE: 0
      • URG: 0
      • ACK: 1
      • PSH: 1
      • RST: 0
      • SYN: 0
      • FIN: 0
      • Window: 422
      • Checksum: 61695
      • Urgent Pointer: 0
      • Options: No-Operation
        • Kind: 1
      • Options: No-Operation
        • Kind: 1
      • Options: Timestamps Option
        • Kind: 8
        • Length: 10
        • TS Value: 2025438530
        • TS Echo Reply: 1195258392

Information

Author(s) Olivier Bonaventure
Deadline No deadline
Submission limit No limitation
Category Tags IPv6

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