[lacnog] DHCPv6

Uesley Correa uesleycorrea en gmail.com
Mar Dic 27 11:13:21 -03 2022


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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