Oui - toutefois enlever les infos privées est un peu pénible.
D'abord la daemon.log, un condensé en quelque sorte :
2024-09-18T11:53:53+02:00 UCG-Max odhcp6c[543945]: Starting SOLICIT transaction (timeout 4294967295s, max rc 0)
2024-09-18T11:53:53+02:00 UCG-Max odhcp6c[543945]: Got a valid ADVERTISE after 8ms
2024-09-18T11:53:53+02:00 UCG-Max odhcp6c[543945]: IA_PD 0001 T1 98413 T2 483840
2024-09-18T11:53:53+02:00 UCG-Max odhcp6c[543945]: 2a01:xxxx:xxx:xxx::/56 preferred 604800 valid 604800
2024-09-18T11:53:55+02:00 UCG-Max odhcp6c[543945]: Starting REQUEST transaction (timeout 4294967295s, max rc 10)
2024-09-18T11:53:55+02:00 UCG-Max odhcp6c[543945]: Send REQUEST message (elapsed 0ms, rc 0)
2024-09-18T11:53:55+02:00 UCG-Max odhcp6c[543945]: Got a valid REPLY after 136ms
2024-09-18T11:53:55+02:00 UCG-Max odhcp6c[543945]: IA_PD 0001 T1 98413 T2 483840
2024-09-18T11:53:55+02:00 UCG-Max odhcp6c[543945]: 2a01:xxxx:xxx:xxx::/56 preferred 604800 valid 604800
2024-09-18T11:53:55+02:00 UCG-Max odhcp6c[543945]: T1 98413s, T2 483840s, T3 604800s
2024-09-18T11:53:55+02:00 UCG-Max odhcp6c[543945]: entering stateful-mode on eth4.832
2024-09-18T11:53:55+02:00 UCG-Max odhcp6c[543945]: Starting <POLL> transaction (timeout 98413s, max rc 0)
Ensuite la sortie du tcpdump -i eth4.832 -f 'ip6 and (udp port 546 or udp port 547)' -vns0 -X,
que j'ai du en plus reformater car en IPv6 il le fait mal tout est en une seule ligne - et j'ai viré la partie data dump
11:53:52.494389 IP6 (flowlabel 0x10713, hlim 1, next-header UDP (17) payload length: 139)
fe80::xxx:xxxx:xxxx:xxxx.546 > ff02::1:2.547: [udp sum ok]
dhcp6 solicit (xid=aa3872 (elapsed-time 0)
(option-request SIP-servers-domain SIP-servers-address DNS-server DNS-search-list SNTP-servers NTP-server AFTR-Name opt_67 opt_94 opt_95 opt_96 opt_82)
(client-ID hwaddr type 1 0887xxxxxxxx)
(reconfigure-accept) (Client-FQDN)
(IA_NA IAID:1 T1:0 T2:0) (IA_PD IAID:1 T1:0 T2:0 (IA_PD-prefix ::/56 pltime:0 vltime:0)))
11:53:52.519191 IP6 (class 0xc0, hlim 255, next-header UDP (17) payload length: 229)
fe80::xxx:xxx.547 > fe80::xxx:xxxx:xxxx:xxxx.546: [udp sum ok]
dhcp6 advertise (xid=aa3872
(server-ID hwaddr type 1 4055xxxxxxxx)
(client-ID hwaddr type 1 0887xxxxxxxx)
(IA_NA IAID:1 T1:0 T2:0 (status-code NoAddrsAvail))
(IA_PD IAID:1 T1:98413 T2:483840 (IA_PD-prefix 2a01:xxxx:xxx:xxx::/56 pltime:604800 vltime:604800))
(authentication proto: 0, alg: 0, RDM: mono, RD: 0000 0000 0000 0000 ??)
(vendor-specific-info) (DNS-search-list PUT.access.orange-multimedia.net.))
11:53:53.824294 IP6 (flowlabel 0x10713, hlim 1, next-header UDP (17) payload length: 123)
fe80::xxx:xxxx:xxxx:xxxx.546 > ff02::1:2.547: [udp sum ok]
dhcp6 solicit (xid=4db0d (elapsed-time 0)
(option-request SIP-servers-domain SIP-servers-address DNS-server DNS-search-list SNTP-servers NTP-server AFTR-Name opt_67 opt_94 opt_95 opt_96 opt_82)
(client-ID hwaddr type 1 0887xxxxxxxx)
(reconfigure-accept) (Client-FQDN)
(IA_PD IAID:1 T1:0 T2:0 (IA_PD-prefix ::/56 pltime:0 vltime:0)))
11:53:53.831846 IP6 (class 0xc0, hlim 255, next-header UDP (17) payload length: 176)
fe80::xxx:xxx.547 > fe80::xxx:xxxx:xxxx:xxxx.546: [udp sum ok]
dhcp6 advertise (xid=4db0d (server-ID hwaddr type 1 4055xxxxxxxx) (client-ID hwaddr type 1 0887xxxxxxxx)
(IA_PD IAID:1 T1:98413 T2:483840 (IA_PD-prefix 2a01:xxxx:xxx:xxx::/56 pltime:604800 vltime:604800))
(authentication proto: 0, alg: 0, RDM: mono, RD: 0000 0000 0000 0000 ??)
(vendor-specific-info) (DNS-search-list PUT.access.orange-multimedia.net.))
11:53:55.743688 IP6 (flowlabel 0x10713, hlim 1, next-header UDP (17) payload length: 135)
fe80::xxx:xxxx:xxxx:xxxx.546 > ff02::1:2.547: [udp sum ok]
dhcp6 request (xid=beb0ad (elapsed-time 0)
(option-request SIP-servers-domain SIP-servers-address DNS-server DNS-search-list SNTP-servers NTP-server AFTR-Name opt_67 opt_94 opt_95 opt_96)
(client-ID hwaddr type 1 0887xxxxxxxx)
(server-ID hwaddr type 1 4055xxxxxxxx)
(reconfigure-accept) (Client-FQDN)
(IA_PD IAID:1 T1:0 T2:0 (IA_PD-prefix 2a01:xxxx:xxx:xxx::/56 pltime:604800 vltime:604800)))
11:53:55.879592 IP6 (class 0xc0, hlim 255, next-header UDP (17) payload length: 176)
fe80::xxx:xxx.547 > fe80::xxx:xxxx:xxxx:xxxx.546: [udp sum ok]
dhcp6 reply (xid=beb0ad
(server-ID hwaddr type 1 4055xxxxxxxx)
(client-ID hwaddr type 1 0887xxxxxxxx)
(IA_PD IAID:1 T1:98413 T2:483840 (IA_PD-prefix 2a01:xxxx:xxx:xxx::/56 pltime:604800 vltime:604800))
(authentication proto: 0, alg: 0, RDM: mono, RD: 0000 0000 0000 0000 ??)
(vendor-specific-info) (DNS-search-list PUT.access.orange-multimedia.net.))
La seule option spécifique fournie à Orange est donc en V6 le ClientID (option 1), copie de l'option 61 DHCPv4, le clone Macaddr
Alors qu'avant j'en envoyais 4 (options 1,11,15,16)