IPv6 : a sequence of ping6

ICMPv6, described in the IPv6 chapter of Computer Networking: Principles, Protocols and Practice is a companion protocol for IPv6 that is used for various functions including network debugging. ping6 is a popular debugging tool that allows to verify whether a remote host is up and running. For this, it sends an ICMPv6 Echo request that contains some information and waits for an ICMPv6 Echo reply.

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Reorder ICMPv6 messages

Can you reorder the packets that were captured while a host was using ping6 to verify the reachability of destination 2001:6a8:3081:1::2 ?

#	Length	Summary
0	48 bytes	`Internet Control Message Protocol v6`
1	48 bytes	`Internet Control Message Protocol v6`
2	48 bytes	`Internet Control Message Protocol v6`
3	48 bytes	`Internet Control Message Protocol v6`
4	48 bytes	`Internet Control Message Protocol v6`
5	48 bytes	`Internet Control Message Protocol v6`

0000  6006f53600103a3d  200106a830810001
0010  0000000000000002  200106a8308f0002
0020  48e995ae3a92922d  8100561c3a830004

0000  `.õ6..:= ..¨0...
0010  ........ ..¨0...
0020  Hé.®:..-..V.:...

Internet Protocol Version 6, Src: 2001:6a8:3081:1::2, Dst: 2001:6a8:308f:2:48e9:95ae:3a92:922d
- 0110 .... = Version: 6
- .... 0000 0000 .... .... .... .... .... = Traffic Class: 0x00 (DSCP: CS0, ECN: Not-ECT)
  - .... 0000 00.. .... .... .... .... .... = Differentiated Services Codepoint: Default (0)
  - .... .... ..00 .... .... .... .... .... = Explicit Congestion Notification: Not ECN-Capable Transport (0)
- .... .... .... 0110 1111 0101 0011 0110 = Flow Label: 0x6f536
- Payload Length: 16
- Next Header: ICMPv6 (58)
- Hop Limit: 61
- Source: 2001:6a8:3081:1::2
- Destination: 2001:6a8:308f:2:48e9:95ae:3a92:922d
Internet Control Message Protocol v6
- Type: Echo (ping) reply (129)
- Code: 0
- Checksum: 0x561c [correct]
- Identifier: 0x3a83
- Sequence: 4

0000  6006f53600103a3d  200106a830810001
0010  0000000000000002  200106a8308f0002
0020  48e995ae3a92922d  810072593a830002

0000  `.õ6..:= ..¨0...
0010  ........ ..¨0...
0020  Hé.®:..-..rY:...

Internet Protocol Version 6, Src: 2001:6a8:3081:1::2, Dst: 2001:6a8:308f:2:48e9:95ae:3a92:922d
- 0110 .... = Version: 6
- .... 0000 0000 .... .... .... .... .... = Traffic Class: 0x00 (DSCP: CS0, ECN: Not-ECT)
  - .... 0000 00.. .... .... .... .... .... = Differentiated Services Codepoint: Default (0)
  - .... .... ..00 .... .... .... .... .... = Explicit Congestion Notification: Not ECN-Capable Transport (0)
- .... .... .... 0110 1111 0101 0011 0110 = Flow Label: 0x6f536
- Payload Length: 16
- Next Header: ICMPv6 (58)
- Hop Limit: 61
- Source: 2001:6a8:3081:1::2
- Destination: 2001:6a8:308f:2:48e9:95ae:3a92:922d
Internet Control Message Protocol v6
- Type: Echo (ping) reply (129)
- Code: 0
- Checksum: 0x7259 [correct]
- Identifier: 0x3a83
- Sequence: 2

0000  6006f53600103a3d  200106a830810001
0010  0000000000000002  200106a8308f0002
0020  48e995ae3a92922d  8100687b3a830003

0000  `.õ6..:= ..¨0...
0010  ........ ..¨0...
0020  Hé.®:..-..h{:...

Internet Protocol Version 6, Src: 2001:6a8:3081:1::2, Dst: 2001:6a8:308f:2:48e9:95ae:3a92:922d
- 0110 .... = Version: 6
- .... 0000 0000 .... .... .... .... .... = Traffic Class: 0x00 (DSCP: CS0, ECN: Not-ECT)
  - .... 0000 00.. .... .... .... .... .... = Differentiated Services Codepoint: Default (0)
  - .... .... ..00 .... .... .... .... .... = Explicit Congestion Notification: Not ECN-Capable Transport (0)
- .... .... .... 0110 1111 0101 0011 0110 = Flow Label: 0x6f536
- Payload Length: 16
- Next Header: ICMPv6 (58)
- Hop Limit: 61
- Source: 2001:6a8:3081:1::2
- Destination: 2001:6a8:308f:2:48e9:95ae:3a92:922d
Internet Control Message Protocol v6
- Type: Echo (ping) reply (129)
- Code: 0
- Checksum: 0x687b [correct]
- Identifier: 0x3a83
- Sequence: 3

0000  6006f53600103a40  200106a8308f0002
0010  48e995ae3a92922d  200106a830810001
0020  0000000000000002  8000697b3a830003

0000  `.õ6..:@ ..¨0...
0010  Hé.®:..- ..¨0...
0020  ..........i{:...

Internet Protocol Version 6, Src: 2001:6a8:308f:2:48e9:95ae:3a92:922d, Dst: 2001:6a8:3081:1::2
- 0110 .... = Version: 6
- .... 0000 0000 .... .... .... .... .... = Traffic Class: 0x00 (DSCP: CS0, ECN: Not-ECT)
  - .... 0000 00.. .... .... .... .... .... = Differentiated Services Codepoint: Default (0)
  - .... .... ..00 .... .... .... .... .... = Explicit Congestion Notification: Not ECN-Capable Transport (0)
- .... .... .... 0110 1111 0101 0011 0110 = Flow Label: 0x6f536
- Payload Length: 16
- Next Header: ICMPv6 (58)
- Hop Limit: 64
- Source: 2001:6a8:308f:2:48e9:95ae:3a92:922d
- Destination: 2001:6a8:3081:1::2
Internet Control Message Protocol v6
- Type: Echo (ping) request (128)
- Code: 0
- Checksum: 0x697b [correct]
- Identifier: 0x3a83
- Sequence: 3

0000  6006f53600103a40  200106a8308f0002
0010  48e995ae3a92922d  200106a830810001
0020  0000000000000002  8000571c3a830004

0000  `.õ6..:@ ..¨0...
0010  Hé.®:..- ..¨0...
0020  ..........W.:...

Internet Protocol Version 6, Src: 2001:6a8:308f:2:48e9:95ae:3a92:922d, Dst: 2001:6a8:3081:1::2
- 0110 .... = Version: 6
- .... 0000 0000 .... .... .... .... .... = Traffic Class: 0x00 (DSCP: CS0, ECN: Not-ECT)
  - .... 0000 00.. .... .... .... .... .... = Differentiated Services Codepoint: Default (0)
  - .... .... ..00 .... .... .... .... .... = Explicit Congestion Notification: Not ECN-Capable Transport (0)
- .... .... .... 0110 1111 0101 0011 0110 = Flow Label: 0x6f536
- Payload Length: 16
- Next Header: ICMPv6 (58)
- Hop Limit: 64
- Source: 2001:6a8:308f:2:48e9:95ae:3a92:922d
- Destination: 2001:6a8:3081:1::2
Internet Control Message Protocol v6
- Type: Echo (ping) request (128)
- Code: 0
- Checksum: 0x571c [correct]
- Identifier: 0x3a83
- Sequence: 4

0000  6006f53600103a40  200106a8308f0002
0010  48e995ae3a92922d  200106a830810001
0020  0000000000000002  800073593a830002

0000  `.õ6..:@ ..¨0...
0010  Hé.®:..- ..¨0...
0020  ..........sY:...

Internet Protocol Version 6, Src: 2001:6a8:308f:2:48e9:95ae:3a92:922d, Dst: 2001:6a8:3081:1::2
- 0110 .... = Version: 6
- .... 0000 0000 .... .... .... .... .... = Traffic Class: 0x00 (DSCP: CS0, ECN: Not-ECT)
  - .... 0000 00.. .... .... .... .... .... = Differentiated Services Codepoint: Default (0)
  - .... .... ..00 .... .... .... .... .... = Explicit Congestion Notification: Not ECN-Capable Transport (0)
- .... .... .... 0110 1111 0101 0011 0110 = Flow Label: 0x6f536
- Payload Length: 16
- Next Header: ICMPv6 (58)
- Hop Limit: 64
- Source: 2001:6a8:308f:2:48e9:95ae:3a92:922d
- Destination: 2001:6a8:3081:1::2
Internet Control Message Protocol v6
- Type: Echo (ping) request (128)
- Code: 0
- Checksum: 0x7359 [correct]
- Identifier: 0x3a83
- Sequence: 2

Autores	Olivier Bonaventure
Prazo de entrega	Sem prazo
Limite de submissão	No limitation
Category tags	ipv6

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