Salut à tous,
J'ai un souci pour obtenir l'IPv4 (fullstack) de mon ISP.
Le client DHCP envoie bien un DISCOVER, je reçois un OFFER, puis plus rien, ça repart en DISCOVER.
DISCOVER:
Frame 96204: 391 bytes on wire (3128 bits), 391 bytes captured (3128 bits) on interface udpdump, id 0
EXPORTED_PDU
TZSP: Ethernet
Ethernet II, Src: PTInovacao_XX:XX:XX (00:06:XX:XX:XX:XX), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Destination: Broadcast (ff:ff:ff:ff:ff:ff)
Source: PTInovacao_XX:XX:XX (00:06:XX:XX:XX:XX)
Type: IPv4 (0x0800)
[Stream index: 6]
Internet Protocol Version 4, Src: 0.0.0.0, Dst: 255.255.255.255
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
Total Length: 328
Identification: 0x0000 (0)
000. .... = Flags: 0x0
...0 0000 0000 0000 = Fragment Offset: 0
Time to Live: 16
Protocol: UDP (17)
Header Checksum: 0xa9a6 [validation disabled]
[Header checksum status: Unverified]
Source Address: 0.0.0.0
Destination Address: 255.255.255.255
[Stream index: 1]
User Datagram Protocol, Src Port: 68, Dst Port: 67
Source Port: 68
Destination Port: 67
Length: 308
Checksum: 0xbf7f [unverified]
[Checksum Status: Unverified]
[Stream index: 7]
[Stream Packet Number: 2197]
[Timestamps]
UDP payload (300 bytes)
Dynamic Host Configuration Protocol (Discover)
Message type: Boot Request (1)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0xe62c4968
Seconds elapsed: 46
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: PTInovacao_XX:XX:XX (00:06:XX: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: 8
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: (12) Host Name
Parameter Request List Item: (15) Domain Name
Parameter Request List Item: (28) Broadcast Address
Parameter Request List Item: (42) Network Time Protocol Servers
Parameter Request List Item: (121) Classless Static Route
Option: (57) Maximum DHCP Message Size
Length: 2
Maximum DHCP Message Size: 576
Option: (60) Vendor class identifier
Length: 26
Vendor class identifier: neufbox_NB6V-MAIN-bypassed
Option: (255) End
Option End: 255
Padding: 0000000000000000000000000000
OFFER:
Frame 97591: 395 bytes on wire (3160 bits), 395 bytes captured (3160 bits) on interface udpdump, id 0
EXPORTED_PDU
TZSP: Ethernet
Ethernet II, Src: Nokia_XX:XX:XX (68:ab:09:XX:XX:XX), Dst: PTInovacao_XX:XX:XX (00:06:XX:XX:XX:XX)
Destination: PTInovacao_XX:XX:XX (00:06:XX:XX:XX:XX)
Source: Nokia_XX:XX:XX (68:ab:09:XX:XX:XX)
Type: IPv4 (0x0800)
[Stream index: 0]
Frame check sequence: 0x00000000 [unverified]
[FCS Status: Unverified]
Internet Protocol Version 4, Src: <router>, Dst: <ip public>
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0xc0 (DSCP: CS6, ECN: Not-ECT)
Total Length: 328
Identification: 0x7c28 (31784)
000. .... = Flags: 0x0
...0 0000 0000 0000 = Fragment Offset: 0
Time to Live: 64
Protocol: UDP (17)
Header Checksum: 0x93d6 [validation disabled]
[Header checksum status: Unverified]
Source Address: <router>
Destination Address: <ip public>
[Stream index: 3]
User Datagram Protocol, Src Port: 67, Dst Port: 68
Source Port: 67
Destination Port: 68
Length: 308
Checksum: 0x5103 [unverified]
[Checksum Status: Unverified]
[Stream index: 9]
[Stream Packet Number: 1893]
[Timestamps]
UDP payload (300 bytes)
Dynamic Host Configuration Protocol (Offer)
Message type: Boot Reply (2)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0xf128f0f0
Seconds elapsed: 0
Bootp flags: 0x0000 (Unicast)
Client IP address: 0.0.0.0
Your (client) IP address: <ip public>
Next server IP address: <server ip>
Relay agent IP address: <dhcp ip>
Client MAC address: PTInovacao_XX:XX:XX (00:06:XX: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 (<dhcp ip>)
Length: 4
DHCP Server Identifier: <dhcp ip>
Option: (51) IP Address Lease Time
Length: 4
IP Address Lease Time: 4 hours (14400)
Option: (1) Subnet Mask (255.255.254.0)
Length: 4
Subnet Mask: 255.255.254.0
Option: (3) Router
Length: 4
Router: <router>
Option: (6) Domain Name Server
Length: 8
Domain Name Server: 109.0.66.10
Domain Name Server: 109.0.66.20
Option: (255) End
Option End: 255
Padding: 00000000000000000000000000000000000000000000
Si je change l'interface du client dhcp pour interroger un dhcp local, le client fait bien un DHCP REQUEST et reçoit une IP.
Je ne vois pas ce qui peut bloquer. Une idée ?
ROS et RB Versions: 7.17
Je peux poster ici grâce au stack V6 (donc l'IPv6 fonctionne)
Routeur