Des nouvelles du jour, voici les échanges entre la NB6 et le réseau fibre lors sur le protocole DHCPV6 :
Solicit :Frame 113: 212 bytes on wire (1696 bits), 212 bytes captured (1696 bits) on interface \Device\NPF_{1566D280-B0A3-4D0D-BCF1-B39EC6D26585}, id 0
Ethernet II, Src: Sfr_ec:10:27 (e4:5d:51:ec:10:27), Dst: IPv6mcast_01:00:02 (33:33:00:01:00:02)
Internet Protocol Version 6, Src: fe80::e65d:51ff:feec:1027, Dst: ff02::1:2
User Datagram Protocol, Src Port: 546, Dst Port: 547
DHCPv6
Message type: Solicit (1)
Transaction ID: 0xbc73e5
Elapsed time
Option: Elapsed time (

Length: 2
Elapsed time: 0ms
Option Request
Option: Option Request (6)
Length: 2
Requested Option code: DNS recursive name server (23)
Client Identifier
Option: Client Identifier (1)
Length: 10
DUID: 00030001e45d51ec1028
DUID Type: link-layer address (3)
Hardware type: Ethernet (1)
Link-layer address: e4:5d:51:ec:10:28
Vendor Class
Option: Vendor Class (16)
Length: 71
Enterprise ID: SFR (40972)
vendor-class-data: neufbox_NB6VAC-FXC-r0_NB6VAC-MAIN-R4.0.44k_NB6VAC-XDSL-A2pv6F039p
Identity Association for Prefix Delegation
Option: Identity Association for Prefix Delegation (25)
Length: 41
IAID: 00000001
T1: 0
T2: 0
IA Prefix
Option: IA Prefix (26)
Length: 25
Preferred lifetime: 0
Valid lifetime: 0
Prefix length: 0
Prefix address: ::
Advertise :Frame 114: 175 bytes on wire (1400 bits), 175 bytes captured (1400 bits) on interface \Device\NPF_{1566D280-B0A3-4D0D-BCF1-B39EC6D26585}, id 0
Ethernet II, Src: Nokia_9c:57:73 (a4:7b:2c:9c:57:73), Dst: Sfr_ec:10:27 (e4:5d:51:ec:10:27)
Internet Protocol Version 6, Src: fe80::5555, Dst: fe80::e65d:51ff:feec:1027
User Datagram Protocol, Src Port: 547, Dst Port: 546
DHCPv6
Message type: Advertise (2)
Transaction ID: 0xbc73e5
Server Identifier
Option: Server Identifier (2)
Length: 10
DUID: 00030001a47b2c9c5601
DUID Type: link-layer address (3)
Hardware type: Ethernet (1)
Link-layer address: a4:7b:2c:9c:56:01
Client Identifier
Option: Client Identifier (1)
Length: 10
DUID: 00030001e45d51ec1028
DUID Type: link-layer address (3)
Hardware type: Ethernet (1)
Link-layer address: e4:5d:51:ec:10:28
DNS recursive name server
Option: DNS recursive name server (23)
Length: 32
1 DNS server address: 2a02:8400::6001
2 DNS server address: 2a02:8400::6000
Identity Association for Prefix Delegation
Option: Identity Association for Prefix Delegation (25)
Length: 41
IAID: 00000001
T1: 1800
T2: 2880
IA Prefix
Request : Frame 127: 226 bytes on wire (1808 bits), 226 bytes captured (1808 bits) on interface \Device\NPF_{1566D280-B0A3-4D0D-BCF1-B39EC6D26585}, id 0
Ethernet II, Src: Sfr_ec:10:27 (e4:5d:51:ec:10:27), Dst: IPv6mcast_01:00:02 (33:33:00:01:00:02)
Internet Protocol Version 6, Src: fe80::e65d:51ff:feec:1027, Dst: ff02::1:2
User Datagram Protocol, Src Port: 546, Dst Port: 547
DHCPv6
Message type: Request (3)
Transaction ID: 0x72205a
Elapsed time
Option: Elapsed time (

Length: 2
Elapsed time: 0ms
Option Request
Option: Option Request (6)
Length: 2
Requested Option code: DNS recursive name server (23)
Client Identifier
Option: Client Identifier (1)
Length: 10
DUID: 00030001e45d51ec1028
DUID Type: link-layer address (3)
Hardware type: Ethernet (1)
Link-layer address: e4:5d:51:ec:10:28
Server Identifier
Option: Server Identifier (2)
Length: 10
DUID: 00030001a47b2c9c5601
DUID Type: link-layer address (3)
Hardware type: Ethernet (1)
Link-layer address: a4:7b:2c:9c:56:01
Vendor Class
Option: Vendor Class (16)
Length: 71
Enterprise ID: SFR (40972)
vendor-class-data: neufbox_NB6VAC-FXC-r0_NB6VAC-MAIN-R4.0.44k_NB6VAC-XDSL-A2pv6F039p
Identity Association for Prefix Delegation
Option: Identity Association for Prefix Delegation (25)
Length: 41
IAID: 00000001
T1: 0
T2: 0
IA Prefix
Option: IA Prefix (26)
Length: 25
Preferred lifetime: 0
Valid lifetime: 0
Prefix length: 56
Prefix address: 2a02:8428:19cc:2d00::
Reply : Frame 128: 175 bytes on wire (1400 bits), 175 bytes captured (1400 bits) on interface \Device\NPF_{1566D280-B0A3-4D0D-BCF1-B39EC6D26585}, id 0
Ethernet II, Src: Nokia_9c:57:73 (a4:7b:2c:9c:57:73), Dst: Sfr_ec:10:27 (e4:5d:51:ec:10:27)
Internet Protocol Version 6, Src: fe80::5555, Dst: fe80::e65d:51ff:feec:1027
User Datagram Protocol, Src Port: 547, Dst Port: 546
DHCPv6
Message type: Reply (7)
Transaction ID: 0x72205a
Server Identifier
Option: Server Identifier (2)
Length: 10
DUID: 00030001a47b2c9c5601
DUID Type: link-layer address (3)
Hardware type: Ethernet (1)
Link-layer address: a4:7b:2c:9c:56:01
Client Identifier
Option: Client Identifier (1)
Length: 10
DUID: 00030001e45d51ec1028
DUID Type: link-layer address (3)
Hardware type: Ethernet (1)
Link-layer address: e4:5d:51:ec:10:28
DNS recursive name server
Option: DNS recursive name server (23)
Length: 32
1 DNS server address: 2a02:8400::6001
2 DNS server address: 2a02:8400::6000
Identity Association for Prefix Delegation
Option: Identity Association for Prefix Delegation (25)
Length: 41
IAID: 00000001
T1: 1800
T2: 2880
IA Prefix
Option: IA Prefix (26)
Length: 25
Preferred lifetime: 3600
Valid lifetime: 86400
Prefix length: 56
Prefix address: 2a02:8428:19cc:2d00::
La partie IA Prefix est absente dans la trame sous OpenWrt.Frame 124: 239 bytes on wire (1912 bits), 239 bytes captured (1912 bits) on interface \Device\NPF_{1566D280-B0A3-4D0D-BCF1-B39EC6D26585}, id 0
Ethernet II, Src: Tp-LinkT_df:00:5e (a4:2b:b0:df:00:5e), Dst: IPv6mcast_01:00:02 (33:33:00:01:00:02)
Internet Protocol Version 6, Src: fe80::a62b:b0ff:fedf:5e, Dst: ff02::1:2
User Datagram Protocol, Src Port: 546, Dst Port: 547
DHCPv6
Message type: Solicit (1)
Transaction ID: 0x9fec20
Elapsed time
Option: Elapsed time (

Length: 2
Elapsed time: 1070ms
Option Request
Option: Option Request (6)
Length: 24
Requested Option code: SIP Server Domain Name List (21)
Requested Option code: SIP Servers IPv6 Address List (22)
Requested Option code: DNS recursive name server (23)
Requested Option code: Domain Search List (24)
Requested Option code: Simple Network Time Protocol Server (31)
Requested Option code: NTP Server (56)
Requested Option code: Dual-Stack Lite AFTR Name (64)
Requested Option code: Prefix Exclude (67)
Requested Option code: S46 MAP-E Container (94)
Requested Option code: S46 MAP-T Container (95)
Requested Option code: S46 Lightweight 4over6 Container (96)
Requested Option code: SOL_MAX_RT (82)
Client Identifier
Option: Client Identifier (1)
Length: 10
DUID: 00030001e45d51ec1028
DUID Type: link-layer address (3)
Hardware type: Ethernet (1)
Link-layer address: e4:5d:51:ec:10:28
Vendor Class
Option: Vendor Class (16)
Length: 71
Enterprise ID: SFR (40972)
vendor-class-data: neufbox_NB6VAC-FXC-r0_NB6VAC-MAIN-R4.0.44j_NB6VAC-XDSL-A2pv6F039p
Reconfigure Accept
Option: Reconfigure Accept (20)
Length: 0
Client Fully Qualified Domain Name
Option: Client Fully Qualified Domain Name (39)
Length: 10
Flags: 0x00 [CLIENT wants to update its AAAA RRs and SERVER to update its PTR RRs]
Top Level Domain name (TLD): OpenWrt.
Identity Association for Non-temporary Address
Option: Identity Association for Non-temporary Address (3)
Length: 12
IAID: 00000001
T1: 0
T2: 0
Identity Association for Prefix Delegation
Option: Identity Association for Prefix Delegation (25)
Length: 12
IAID: 00000001
T1: 0
T2: 0
Et pour les experts du sujet, j'ai trouvé ça :
https://forum.openwrt.org/t/how-to-request-specific-ia-prefix-in-dhcpv6-solicit/109752