[lacnog] DHCPv6

Douglas Fischer fischerdouglas en gmail.com
Mie Dic 28 08:23:09 -03 2022


¡Hola Fernando!
Reforzo la recomendación de Uesley de probar con /56.

He visto casos muy raros como este... Tanto con TP-Link como con Intelbras.

Otra sugerencia es intentar poner otro equipo en lugar del TP-link... No
soy muy fan de Mikrotik, pero para estas pruebas es una buena herramienta.

Em ter., 27 de dez. de 2022 às 11:13, Uesley Correa <uesleycorrea en gmail.com>
escreveu:

> Hola Fernando!
>
> ¿Ya probaste con /56? Ya he escuchado de routers que no aceptan recibir
> /48. Otro detalle: ¿hay algo de RA en esa interfaz de salida? Ya he visto
> routers en DHCP que, si no reciben informaciones por ND, no aplican /
> aceptan asignaciones por DHCP.
>
> Saludos,
>
> Uesley Corrêa - Analista de Telecomunicaciones
> CEO Telecom Consultoria, Entrenamiento y Servicios
> CEO Telecom Fiber Solutions
>
>
> On Tue, Dec 27, 2022 at 10:57 AM Fernando R. Soto <frsoto en gmail.com>
> wrote:
>
>> Estimados, por favor una consulta
>>
>>
>>
>> Levanté un DHCPv6 con Kea. Y veo que un router TP Link hace un Release de
>> la ip y prefijo que le advierto. Como que no lo acepta porque algo no le
>> gusta…  Como puedo saber que no le gustando o que le está faltando?
>>
>>
>>
>> Slds cordiales
>>
>>
>>
>>
>>
>> *Este es el Advertise de mi  DHCP*
>>
>> Frame 6: 308 bytes on wire (2464 bits), 308 bytes captured (2464 bits)
>>
>> Linux cooked capture v1
>>
>> Internet Protocol Version 6, Src: 2800:f91:20::11, Dst: 2800:f91:760:20::1
>>
>> User Datagram Protocol, Src Port: 547, Dst Port: 547
>>
>> DHCPv6
>>
>>     Message type: Relay-reply (13)
>>
>>     Hopcount: 0
>>
>>     Link address: 2800:f91:760:20::1
>>
>>     Peer address: fe80::1aa6:f7ff:fe99:651d
>>
>>     Interface-Id
>>
>>         Option: Interface-Id (18)
>>
>>         Length: 37
>>
>>         Interface-ID:
>> 4f4c5431504f5033382d50454c2078706f6e20302f31312f302f31323a34362e322e3130…
>>
>>     Relay Message
>>
>>         Option: Relay Message (9)
>>
>>         Length: 165
>>
>>         DHCPv6
>>
>>             Message type: Advertise (2)
>>
>>             Transaction ID: 0x4e9fda
>>
>>             Client Identifier
>>
>>                 Option: Client Identifier (1)
>>
>>                 Length: 14
>>
>>                 DUID: 000100012b33000518a6f799651d
>>
>>                 DUID Type: link-layer address plus time (1)
>>
>>                 Hardware type: Ethernet (1)
>>
>>                 DUID Time: Dec 19, 2022 07:57:09.000000000 Hora estándar
>> de Argentina
>>
>>                 Link-layer address: 18:a6:f7:99:65:1d
>>
>>             Server Identifier
>>
>>                 Option: Server Identifier (2)
>>
>>                 Length: 14
>>
>>                 DUID: 000100012993e1f2000c299d6a9f
>>
>>                 DUID Type: link-layer address plus time (1)
>>
>>                 Hardware type: Ethernet (1)
>>
>>                 DUID Time: Feb  7, 2022 10:58:10.000000000 Hora estándar
>> de Argentina
>>
>>                 Link-layer address: 00:0c:29:9d:6a:9f
>>
>>             Identity Association for Non-temporary Address
>>
>>                 Option: Identity Association for Non-temporary Address (3)
>>
>>                 Length: 40
>>
>>                 IAID: 000207a2
>>
>>                 T1: 1000
>>
>>                 T2: 2000
>>
>>                 IA Address
>>
>>                     Option: IA Address (5)
>>
>>                     Length: 24
>>
>>                     IPv6 address: 2800:f91:760:20::28e2
>>
>>                     Preferred lifetime: 3000
>>
>>                     Valid lifetime: 4000
>>
>>             DNS recursive name server
>>
>>                 Option: DNS recursive name server (23)
>>
>>                 Length: 32
>>
>>                  1 DNS server address: 2001:4860:4860::8888
>>
>>                  2 DNS server address: 2001:4860:4860::8844
>>
>>             Identity Association for Prefix Delegation
>>
>>                 Option: Identity Association for Prefix Delegation (25)
>>
>>                 Length: 41
>>
>>                 IAID: 000207a1
>>
>>                 T1: 1000
>>
>>                 T2: 2000
>>
>>                 IA Prefix
>>
>>                     Option: IA Prefix (26)
>>
>>                     Length: 25
>>
>>                     Preferred lifetime: 3000
>>
>>                     Valid lifetime: 4000
>>
>>                     Prefix length: 48
>>
>>                     Prefix address: 2800:f91:2091::
>>
>>
>>
>> Y este es el Release
>>
>> Frame 10: 233 bytes on wire (1864 bits), 233 bytes captured (1864 bits)
>>
>> Linux cooked capture v1
>>
>> Internet Protocol Version 6, Src: 2800:f91:760:20::1, Dst: 2800:f91:20::11
>>
>> User Datagram Protocol, Src Port: 547, Dst Port: 547
>>
>> DHCPv6
>>
>>     Message type: Relay-forw (12)
>>
>>     Hopcount: 0
>>
>>     Link address: 2800:f91:760:20::1
>>
>>     Peer address: fe80::1aa6:f7ff:fe99:651d
>>
>>     Interface-Id
>>
>>         Option: Interface-Id (18)
>>
>>         Length: 37
>>
>>         Interface-ID:
>> 4f4c5431504f5033382d50454c2078706f6e20302f31312f302f31323a34362e322e3130…
>>
>>     Relay Message
>>
>>         Option: Relay Message (9)
>>
>>         Length: 90
>>
>>         DHCPv6
>>
>>             Message type: Release (8)
>>
>>             Transaction ID: 0x708205
>>
>>             Client Identifier
>>
>>                 Option: Client Identifier (1)
>>
>>                 Length: 14
>>
>>                 DUID: 000100012b33000518a6f799651d
>>
>>                 DUID Type: link-layer address plus time (1)
>>
>>                 Hardware type: Ethernet (1)
>>
>>                 DUID Time: Dec 19, 2022 07:57:09.000000000 Hora estándar
>> de Argentina
>>
>>                 Link-layer address: 18:a6:f7:99:65:1d
>>
>>             Server Identifier
>>
>>                 Option: Server Identifier (2)
>>
>>                 Length: 14
>>
>>                 DUID: 000100012993e1f2000c299d6a9f
>>
>>                 DUID Type: link-layer address plus time (1)
>>
>>                 Hardware type: Ethernet (1)
>>
>>                 DUID Time: Feb  7, 2022 10:58:10.000000000 Hora estándar
>> de Argentina
>>
>>                 Link-layer address: 00:0c:29:9d:6a:9f
>>
>>             Identity Association for Non-temporary Address
>>
>>                 Option: Identity Association for Non-temporary Address (3)
>>
>>                 Length: 40
>>
>>                 IAID: 000207a2
>>
>>                 T1: 1000
>>
>>                 T2: 2000
>>
>>                 IA Address
>>
>>                     Option: IA Address (5)
>>
>>                     Length: 24
>>
>>                     IPv6 address: 2800:f91:760:20::28e2
>>
>>                     Preferred lifetime: 3000
>>
>>                     Valid lifetime: 4000
>>
>>             Elapsed time
>>
>>                 Option: Elapsed time (8)
>>
>>                 Length: 2
>>
>>                 Elapsed time: 0ms
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-- 
Douglas Fernando Fischer
Engº de Controle e Automação
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