Il y a les 4 paquets échangés:
DHCP Discover  (Livebox -> Orange, vlan 832, CoS 6)
DHCP Offer       (Orange -> Livebox, vlan 832, CoS 7)
DHCP Request   (Livebox -> Orange, vlan 832, CoS 6)
DHCP ACK        (Orange -> Livebox, vlan 832, CoS 7)
DHCP Discover:
Frame 81: 380 bytes on wire (3040 bits), 380 bytes captured (3040 bits) on interface 0
Ethernet II, Src: Sagemcom_xx:xx:xx (00:37:b7:xx:xx:xx), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
802.1Q Virtual LAN, PRI: 6, CFI: 0, ID: 832
Internet Protocol Version 4, Src: 0.0.0.0, Dst: 255.255.255.255
User Datagram Protocol, Src Port: 68 (68), Dst Port: 67 (67)
Bootstrap Protocol (Discover)
    Message type: Boot Request (1)
    Hardware type: Ethernet (0x01)
    Hardware address length: 6
    Hops: 0
    Transaction ID: 0x0cc032e9
    Seconds elapsed: 1
    Bootp flags: 0x8000, Broadcast flag (Broadcast)
    Client IP address: 0.0.0.0
    Your (client) IP address: 0.0.0.0
    Next server IP address: 0.0.0.0
    Relay agent IP address: 0.0.0.0
    Client MAC address: Sagemcom_xx:xx:xx (00:37:b7:xx:xx:xx)
    Client hardware address padding: 00000000000000000000
    Server host name not given
    Boot file name not given
    Magic cookie: DHCP
    Option: (53) DHCP Message Type (Discover)
        Length: 1
        DHCP: Discover (1)
    Option: (55) Parameter Request List
        Length: 11
        Parameter Request List Item: (1) Subnet Mask
        Parameter Request List Item: (3) Router
        Parameter Request List Item: (6) Domain Name Server
        Parameter Request List Item: (15) Domain Name
        Parameter Request List Item: (28) Broadcast Address
        Parameter Request List Item: (51) IP Address Lease Time
        Parameter Request List Item: (58) Renewal Time Value
        Parameter Request List Item: (59) Rebinding Time Value
        Parameter Request List Item: (90) Authentication
        Parameter Request List Item: (119) Domain Search
        Parameter Request List Item: (120) SIP Servers
    Option: (60) Vendor class identifier
        Length: 5
        Vendor class identifier: sagem
    Option: (77) User Class Information
        Length: 44
        Instance of User Class: [0]
    Option: (90) Authentication
        Length: 22
        Protocol: configuration token (0)
        Algorithm: 0
        Replay Detection Method: Monotonically-increasing counter (0)
        RDM Replay Detection Value: 0x0000000000000000
        Authentication Information: fti/xxxxxx
    Option: (255) End
        Option End: 255
DHCP Offer:
Frame 82: 426 bytes on wire (3408 bits), 426 bytes captured (3408 bits) on interface 0
Ethernet II, Src: Alcatel-_dc:fc:eb (84:26:2b:dc:fc:eb), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
802.1Q Virtual LAN, PRI: 7, CFI: 0, ID: 832
Internet Protocol Version 4, Src: 86.245.184.1, Dst: 255.255.255.255
User Datagram Protocol, Src Port: 67 (67), Dst Port: 68 (68)
Bootstrap Protocol (Offer)
    Message type: Boot Reply (2)
    Hardware type: Ethernet (0x01)
    Hardware address length: 6
    Hops: 0
    Transaction ID: 0x0cc032e9
    Seconds elapsed: 1
    Bootp flags: 0x8000, Broadcast flag (Broadcast)
    Client IP address: 0.0.0.0
    Your (client) IP address: 86.245.xxx.xxx
    Next server IP address: 80.10.247.176
    Relay agent IP address: 80.10.237.69
    Client MAC address: Sagemcom_xx:xx:xx (00:37:b7:xx:xx:xx)
    Client hardware address padding: 00000000000000000000
    Server host name not given
    Boot file name not given
    Magic cookie: DHCP
    Option: (53) DHCP Message Type (Offer)
        Length: 1
        DHCP: Offer (2)
    Option: (54) DHCP Server Identifier
        Length: 4
        DHCP Server Identifier: 80.10.247.176
    Option: (51) IP Address Lease Time
        Length: 4
        IP Address Lease Time: (86400s) 1 day
    Option: (1) Subnet Mask
        Length: 4
        Subnet Mask: 255.255.248.0
    Option: (3) Router
        Length: 4
        Router: 86.245.184.1
    Option: (6) Domain Name Server
        Length: 8
        Domain Name Server: 80.10.246.136
        Domain Name Server: 81.253.149.6
    Option: (59) Rebinding Time Value
        Length: 4
        Rebinding Time Value: (69200s) 19 hours, 13 minutes, 20 seconds
    Option: (58) Renewal Time Value
        Length: 4
        Renewal Time Value: (43200s) 12 hours
    Option: (28) Broadcast Address
        Length: 4
        Broadcast Address: 86.245.191.255
    Option: (15) Domain Name
        Length: 9
        Domain Name: orange.fr
    Option: (120) SIP Servers
        Length: 42
        SIP Server Encoding: Fully Qualified Domain Name (0)
        SIP Server Name: sbct3g.PUT.access.orange-multimedia.net
    Option: (90) Authentication
        Length: 27
        Protocol: configuration token (0)
        Algorithm: 0
        Replay Detection Method: Monotonically-increasing counter (0)
        RDM Replay Detection Value: 0x0000000000000000
        Authentication Information: dhcpliveboxfr250
    Option: (255) End
        Option End: 255
DHCP Request:
Frame 83: 392 bytes on wire (3136 bits), 392 bytes captured (3136 bits) on interface 0
Ethernet II, Src: Sagemcom_xx:xx:xx (00:37:b7:xx:xx:xx), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
802.1Q Virtual LAN, PRI: 6, CFI: 0, ID: 832
Internet Protocol Version 4, Src: 0.0.0.0, Dst: 255.255.255.255
User Datagram Protocol, Src Port: 68 (68), Dst Port: 67 (67)
Bootstrap Protocol (Request)
    Message type: Boot Request (1)
    Hardware type: Ethernet (0x01)
    Hardware address length: 6
    Hops: 0
    Transaction ID: 0x0cc032e9
    Seconds elapsed: 1
    Bootp flags: 0x8000, Broadcast flag (Broadcast)
    Client IP address: 0.0.0.0
    Your (client) IP address: 0.0.0.0
    Next server IP address: 0.0.0.0
    Relay agent IP address: 0.0.0.0
    Client MAC address: Sagemcom_xx:xx:xx (00:37:b7:xx:xx:xx)
    Client hardware address padding: 00000000000000000000
    Server host name not given
    Boot file name not given
    Magic cookie: DHCP
    Option: (53) DHCP Message Type (Request)
        Length: 1
        DHCP: Request (3)
    Option: (50) Requested IP Address
        Length: 4
        Requested IP Address: 86.245.xxx.xxxx
    Option: (54) DHCP Server Identifier
        Length: 4
        DHCP Server Identifier: 80.10.247.176
    Option: (55) Parameter Request List
        Length: 11
        Parameter Request List Item: (1) Subnet Mask
        Parameter Request List Item: (3) Router
        Parameter Request List Item: (6) Domain Name Server
        Parameter Request List Item: (15) Domain Name
        Parameter Request List Item: (28) Broadcast Address
        Parameter Request List Item: (51) IP Address Lease Time
        Parameter Request List Item: (58) Renewal Time Value
        Parameter Request List Item: (59) Rebinding Time Value
        Parameter Request List Item: (90) Authentication
        Parameter Request List Item: (119) Domain Search
        Parameter Request List Item: (120) SIP Servers
    Option: (60) Vendor class identifier
        Length: 5
        Vendor class identifier: sagem
    Option: (77) User Class Information
        Length: 44
        Instance of User Class: [0]
    Option: (90) Authentication
        Length: 22
        Protocol: configuration token (0)
        Algorithm: 0
        Replay Detection Method: Monotonically-increasing counter (0)
        RDM Replay Detection Value: 0x0000000000000000
        Authentication Information: fti/xxxxxxx
    Option: (255) End
        Option End: 255
DHCP ACK:
Frame 84: 426 bytes on wire (3408 bits), 426 bytes captured (3408 bits) on interface 0
Ethernet II, Src: Alcatel-_dc:fc:eb (84:26:2b:dc:fc:eb), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
802.1Q Virtual LAN, PRI: 7, CFI: 0, ID: 832
Internet Protocol Version 4, Src: 86.245.184.1, Dst: 255.255.255.255
User Datagram Protocol, Src Port: 67 (67), Dst Port: 68 (68)
Bootstrap Protocol (ACK)
    Message type: Boot Reply (2)
    Hardware type: Ethernet (0x01)
    Hardware address length: 6
    Hops: 0
    Transaction ID: 0x0cc032e9
    Seconds elapsed: 1
    Bootp flags: 0x8000, Broadcast flag (Broadcast)
    Client IP address: 0.0.0.0
    Your (client) IP address: 86.245.xxx.xxx
    Next server IP address: 80.10.247.176
    Relay agent IP address: 80.10.237.69
    Client MAC address: Sagemcom_xx:xx:xx (00:37:b7:xx:xx:xx)
    Client hardware address padding: 00000000000000000000
    Server host name not given
    Boot file name not given
    Magic cookie: DHCP
    Option: (53) DHCP Message Type (ACK)
        Length: 1
        DHCP: ACK (5)
    Option: (54) DHCP Server Identifier
        Length: 4
        DHCP Server Identifier: 80.10.247.176
    Option: (51) IP Address Lease Time
        Length: 4
        IP Address Lease Time: (86400s) 1 day
    Option: (1) Subnet Mask
        Length: 4
        Subnet Mask: 255.255.248.0
    Option: (3) Router
        Length: 4
        Router: 86.245.184.1
    Option: (6) Domain Name Server
        Length: 8
        Domain Name Server: 80.10.246.136
        Domain Name Server: 81.253.149.6
    Option: (59) Rebinding Time Value
        Length: 4
        Rebinding Time Value: (69200s) 19 hours, 13 minutes, 20 seconds
    Option: (58) Renewal Time Value
        Length: 4
        Renewal Time Value: (43200s) 12 hours
    Option: (28) Broadcast Address
        Length: 4
        Broadcast Address: 86.245.191.255
    Option: (15) Domain Name
        Length: 9
        Domain Name: orange.fr
    Option: (120) SIP Servers
        Length: 42
        SIP Server Encoding: Fully Qualified Domain Name (0)
        SIP Server Name: sbct3g.PUT.access.orange-multimedia.net
    Option: (90) Authentication
        Length: 27
        Protocol: configuration token (0)
        Algorithm: 0
        Replay Detection Method: Monotonically-increasing counter (0)
        RDM Replay Detection Value: 0x0000000000000000
        Authentication Information: dhcpliveboxfr250
    Option: (255) End
        Option End: 255