bonjour,
voici ce que j'obtiens après avoir fait un tshark sur l'interface
quand ça marche pas:
380 bytes captured (3040 bits) on interface 0
Interface id: 0 (eth2)
Encapsulation type: Ethernet (1)
Arrival Time: Feb 19, 2016 17:16:21.677246128 CET
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1455898581.677246128 seconds
[Time delta from previous captured frame: 14.247606792 seconds]
[Time delta from previous displayed frame: 14.247606792 seconds]
[Time since reference or first frame: 29.323876886 seconds]
Frame Number: 5
Frame Length: 380 bytes (3040 bits)
Capture Length: 380 bytes (3040 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:vlan:ethertype:ip:udp:bootp]
Ethernet II, Src: HewlettP_xx:xx:xx (xx:xx:xx:xx:xx:xx), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Destination: Broadcast (ff:ff:ff:ff:ff:ff)
Address: Broadcast (ff:ff:ff:ff:ff:ff)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
Source: HewlettP_xx:xx:xx (xx:xx:xx:xx:xx:xx)
Address: HewlettP_xx:xx:xx (xx:xx:xx:xx:xx:xx)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: 802.1Q Virtual LAN (0x8100)
802.1Q Virtual LAN, PRI: 0, CFI: 0, ID: 832
000. .... .... .... = Priority: Best Effort (default) (0)
...0 .... .... .... = CFI: Canonical (0)
.... 0011 0100 0000 = ID: 832
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 0.0.0.0, Dst: 255.255.255.255
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes
Differentiated Services Field: 0x10 (DSCP: Unknown, ECN: Not-ECT)
0001 00.. = Differentiated Services Codepoint: Unknown (4)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 362
Identification: 0x0000 (0)
Flags: 0x00
0... .... = Reserved bit: Not set
.0.. .... = Don't fragment: Not set
..0. .... = More fragments: Not set
Fragment offset: 0
Time to live: 128
Protocol: UDP (17)
Header checksum: 0x3974 [validation disabled]
[Good: False]
[Bad: False]
Source: 0.0.0.0
Destination: 255.255.255.255
[Source GeoIP: Unknown]
[Destination GeoIP: Unknown]
User Datagram Protocol, Src Port: 68 (68), Dst Port: 67 (67)
Source Port: 68
Destination Port: 67
Length: 342
Checksum: 0xc3cd [validation disabled]
[Good Checksum: False]
[Bad Checksum: False]
[Stream index: 0]
Bootstrap Protocol (Discover)
Message type: Boot Request (1)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0xbac8252c
Seconds elapsed: 0
Bootp flags: 0x0000 (Unicast)
0... .... .... .... = Broadcast flag: Unicast
.000 0000 0000 0000 = Reserved flags: 0x0000
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: HewlettP_xx:xx:xx (xx:xx: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: (50) Requested IP Address
Length: 4
Requested IP Address: 90.78.xxx.xxx
Option: (55) Parameter Request List
Length: 5
Parameter Request List Item: (1) Subnet Mask
Parameter Request List Item: (2) Time Offset
Parameter Request List Item: (3) Router
Parameter Request List Item: (12) Host Name
Parameter Request List Item: (26) Interface MTU
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: (60) Vendor class identifier
Length: 5
Vendor class identifier: sagem
Option: (77) User Class Information
Length: 44
Instance of User Class: [0]
User Class Length: 43
User Class Data: 46535644534c5f6c697665626f782e496e7465726e65742e...
Option: (255) End
Option End: 255
celui qui fonctionne:
Frame 4: 380 bytes on wire (3040 bits), 380 bytes captured (3040 bits) on interface 0
Interface id: 0 (eth2)
Encapsulation type: Ethernet (1)
Arrival Time: Feb 19, 2016 17:19:16.540928262 CET
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1455898756.540928262 seconds
[Time delta from previous captured frame: 4.634748866 seconds]
[Time delta from previous displayed frame: 4.634748866 seconds]
[Time since reference or first frame: 16.080839390 seconds]
Frame Number: 4
Frame Length: 380 bytes (3040 bits)
Capture Length: 380 bytes (3040 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:vlan:ethertype:ip:udp:bootp]
Ethernet II, Src: HewlettP_xx:xx:xx (xx:xx:xx:xx:xx:xx), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
Destination: Broadcast (ff:ff:ff:ff:ff:ff)
Address: Broadcast (ff:ff:ff:ff:ff:ff)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
Source: HewlettP_xx:xx:xx (xx:xx:xx:xx:xx:xx)
Address: HewlettP_xx:xx:xx (xx:xx:xx:xx:xx:xx)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: 802.1Q Virtual LAN (0x8100)
802.1Q Virtual LAN, PRI: 6, CFI: 0, ID: 832
110. .... .... .... = Priority: Voice, < 10ms latency and jitter (6)
...0 .... .... .... = CFI: Canonical (0)
.... 0011 0100 0000 = ID: 832
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 0.0.0.0, Dst: 255.255.255.255
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes
Differentiated Services Field: 0x10 (DSCP: Unknown, ECN: Not-ECT)
0001 00.. = Differentiated Services Codepoint: Unknown (4)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 362
Identification: 0x0000 (0)
Flags: 0x00
0... .... = Reserved bit: Not set
.0.. .... = Don't fragment: Not set
..0. .... = More fragments: Not set
Fragment offset: 0
Time to live: 128
Protocol: UDP (17)
Header checksum: 0x3974 [validation disabled]
[Good: False]
[Bad: False]
Source: 0.0.0.0
Destination: 255.255.255.255
[Source GeoIP: Unknown]
[Destination GeoIP: Unknown]
User Datagram Protocol, Src Port: 68 (68), Dst Port: 67 (67)
Source Port: 68
Destination Port: 67
Length: 342
Checksum: 0x864b [validation disabled]
[Good Checksum: False]
[Bad Checksum: False]
[Stream index: 0]
Bootstrap Protocol (Discover)
Message type: Boot Request (1)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0x6c0ab16c
Seconds elapsed: 0
Bootp flags: 0x0000 (Unicast)
0... .... .... .... = Broadcast flag: Unicast
.000 0000 0000 0000 = Reserved flags: 0x0000
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: HewlettP_9a:68:04 (34:64:a9:9a:68:04)
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: (50) Requested IP Address
Length: 4
Requested IP Address: 90.78.xxx.xxx
Option: (55) Parameter Request List
Length: 5
Parameter Request List Item: (1) Subnet Mask
Parameter Request List Item: (2) Time Offset
Parameter Request List Item: (3) Router
Parameter Request List Item: (12) Host Name
Parameter Request List Item: (26) Interface MTU
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/xxxxxxxx
Option: (60) Vendor class identifier
Length: 5
Vendor class identifier: sagem
Option: (77) User Class Information
Length: 44
Instance of User Class: [0]
User Class Length: 43
User Class Data: 46535644534c5f6c697665626f782e496e7465726e65742e...
Option: (255) End
Option End: 255