Example of DHCP Info packet from Windows client:
Code: Select all
Frame 1: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 10.0.0.3, Dst: 255.255.255.255
User Datagram Protocol, Src Port: 68 (68), Dst Port: 67 (67)
Bootstrap Protocol (Inform)
Message type: Boot Request (1)
Hardware type: Hyperchannel (0x08)
Hardware address length: 0
Hops: 0
Transaction ID: 0xea3be860
Seconds elapsed: 6
Bootp flags: 0x0000 (Unicast)
Client IP address: 10.0.0.3
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 address not given
Server host name not given
Boot file name not given
Magic cookie: DHCP
Option: (53) DHCP Message Type (Inform)
Option: (61) Client identifier
Option: (12) Host Name
Option: (60) Vendor class identifier
Option: (55) Parameter Request List
Length: 6
Parameter Request List Item: (6) Domain Name Server
Parameter Request List Item: (44) NetBIOS over TCP/IP Name Server
Parameter Request List Item: (43) Vendor-Specific Information
Parameter Request List Item: (1) Subnet Mask
Parameter Request List Item: (249) Private/Classless Static Route (Microsoft)
Parameter Request List Item: (15) Domain Name
Option: (255) End
Padding: 0000000000000000000000000000
or: http://serverfault.com/questions/574121 ... during-con