kdhcp/notes/dhcp.txt

252 lines
12 KiB
Plaintext

No. Time Source Destination Protocol Length Info
1 0.000000 0.0.0.0 255.255.255.255 DHCP 342 DHCP Discover - Transaction ID 0xbcf9e62c
Frame 1: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits)
Encapsulation type: Ethernet (1)
Arrival Time: May 1, 2023 10:20:50.175697000 PDT
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1682961650.175697000 seconds
[Time delta from previous captured frame: 0.000000000 seconds]
[Time delta from previous displayed frame: 0.000000000 seconds]
[Time since reference or first frame: 0.000000000 seconds]
Frame Number: 1
Frame Length: 342 bytes (2736 bits)
Capture Length: 342 bytes (2736 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:ip:udp:dhcp]
[Coloring Rule Name: UDP]
[Coloring Rule String: udp]
Ethernet II, Src: Raspberr_b6:a1:a7 (b8:27:eb:b6:a1:a7), 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: Raspberr_b6:a1:a7 (b8:27:eb:b6:a1:a7)
Address: Raspberr_b6:a1:a7 (b8:27:eb:b6:a1:a7)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
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 (5)
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: 328
Identification: 0x0000 (0)
Flags: 0x00
0... .... = Reserved bit: Not set
.0.. .... = Don't fragment: Not set
..0. .... = More fragments: Not set
...0 0000 0000 0000 = Fragment Offset: 0
Time to Live: 128
Protocol: UDP (17)
Header Checksum: 0x3996 [validation disabled]
[Header checksum status: Unverified]
Source Address: 0.0.0.0
Destination Address: 255.255.255.255
User Datagram Protocol, Src Port: 68, Dst Port: 67
Source Port: 68
Destination Port: 67
Length: 308
Checksum: 0x5b64 [unverified]
[Checksum Status: Unverified]
[Stream index: 0]
[Timestamps]
[Time since first frame: 0.000000000 seconds]
[Time since previous frame: 0.000000000 seconds]
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: 0xbcf9e62c
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: Raspberr_b6:a1:a7 (b8:27:eb:b6:a1:a7)
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: (12) Host Name
Length: 4
Host Name: cdev
Option: (55) Parameter Request List
Length: 13
Parameter Request List Item: (1) Subnet Mask
Parameter Request List Item: (28) Broadcast Address
Parameter Request List Item: (2) Time Offset
Parameter Request List Item: (3) Router
Parameter Request List Item: (15) Domain Name
Parameter Request List Item: (6) Domain Name Server
Parameter Request List Item: (119) Domain Search
Parameter Request List Item: (12) Host Name
Parameter Request List Item: (44) NetBIOS over TCP/IP Name Server
Parameter Request List Item: (47) NetBIOS over TCP/IP Scope
Parameter Request List Item: (26) Interface MTU
Parameter Request List Item: (121) Classless Static Route
Parameter Request List Item: (42) Network Time Protocol Servers
Option: (255) End
Option End: 255
Padding: 0000000000000000000000000000000000000000000000000000000000000000000000
0000 ff ff ff ff ff ff b8 27 eb b6 a1 a7 08 00 45 10 .......'......E.
0010 01 48 00 00 00 00 80 11 39 96 00 00 00 00 ff ff .H......9.......
0020 ff ff 00 44 00 43 01 34 5b 64 01 01 06 00 bc f9 ...D.C.4[d......
0030 e6 2c 00 00 00 00 00 00 00 00 00 00 00 00 00 00 .,..............
0040 00 00 00 00 00 00 b8 27 eb b6 a1 a7 00 00 00 00 .......'........
0050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0060 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0070 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0080 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0090 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0100 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0110 00 00 00 00 00 00 63 82 53 63 35 01 01 0c 04 63 ......c.Sc5....c
0120 64 65 76 37 0d 01 1c 02 03 0f 06 77 0c 2c 2f 1a dev7.......w.,/.
0130 79 2a ff 00 00 00 00 00 00 00 00 00 00 00 00 00 y*..............
0140 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0150 00 00 00 00 00 00 ......
No. Time Source Destination Protocol Length Info
2 2.328938 0.0.0.0 255.255.255.255 DHCP 342 DHCP Discover - Transaction ID 0xbcf9e62c
Frame 2: 342 bytes on wire (2736 bits), 342 bytes captured (2736 bits)
Encapsulation type: Ethernet (1)
Arrival Time: May 1, 2023 10:20:52.504635000 PDT
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1682961652.504635000 seconds
[Time delta from previous captured frame: 2.328938000 seconds]
[Time delta from previous displayed frame: 2.328938000 seconds]
[Time since reference or first frame: 2.328938000 seconds]
Frame Number: 2
Frame Length: 342 bytes (2736 bits)
Capture Length: 342 bytes (2736 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:ip:udp:dhcp]
[Coloring Rule Name: UDP]
[Coloring Rule String: udp]
Ethernet II, Src: Raspberr_b6:a1:a7 (b8:27:eb:b6:a1:a7), 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: Raspberr_b6:a1:a7 (b8:27:eb:b6:a1:a7)
Address: Raspberr_b6:a1:a7 (b8:27:eb:b6:a1:a7)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
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 (5)
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: 328
Identification: 0x0000 (0)
Flags: 0x00
0... .... = Reserved bit: Not set
.0.. .... = Don't fragment: Not set
..0. .... = More fragments: Not set
...0 0000 0000 0000 = Fragment Offset: 0
Time to Live: 128
Protocol: UDP (17)
Header Checksum: 0x3996 [validation disabled]
[Header checksum status: Unverified]
Source Address: 0.0.0.0
Destination Address: 255.255.255.255
User Datagram Protocol, Src Port: 68, Dst Port: 67
Source Port: 68
Destination Port: 67
Length: 308
Checksum: 0x5b61 [unverified]
[Checksum Status: Unverified]
[Stream index: 0]
[Timestamps]
[Time since first frame: 2.328938000 seconds]
[Time since previous frame: 2.328938000 seconds]
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: 0xbcf9e62c
Seconds elapsed: 3
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: Raspberr_b6:a1:a7 (b8:27:eb:b6:a1:a7)
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: (12) Host Name
Length: 4
Host Name: cdev
Option: (55) Parameter Request List
Length: 13
Parameter Request List Item: (1) Subnet Mask
Parameter Request List Item: (28) Broadcast Address
Parameter Request List Item: (2) Time Offset
Parameter Request List Item: (3) Router
Parameter Request List Item: (15) Domain Name
Parameter Request List Item: (6) Domain Name Server
Parameter Request List Item: (119) Domain Search
Parameter Request List Item: (12) Host Name
Parameter Request List Item: (44) NetBIOS over TCP/IP Name Server
Parameter Request List Item: (47) NetBIOS over TCP/IP Scope
Parameter Request List Item: (26) Interface MTU
Parameter Request List Item: (121) Classless Static Route
Parameter Request List Item: (42) Network Time Protocol Servers
Option: (255) End
Option End: 255
Padding: 0000000000000000000000000000000000000000000000000000000000000000000000
0000 ff ff ff ff ff ff b8 27 eb b6 a1 a7 08 00 45 10 .......'......E.
0010 01 48 00 00 00 00 80 11 39 96 00 00 00 00 ff ff .H......9.......
0020 ff ff 00 44 00 43 01 34 5b 61 01 01 06 00 bc f9 ...D.C.4[a......
0030 e6 2c 00 03 00 00 00 00 00 00 00 00 00 00 00 00 .,..............
0040 00 00 00 00 00 00 b8 27 eb b6 a1 a7 00 00 00 00 .......'........
0050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0060 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0070 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0080 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0090 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0100 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0110 00 00 00 00 00 00 63 82 53 63 35 01 01 0c 04 63 ......c.Sc5....c
0120 64 65 76 37 0d 01 1c 02 03 0f 06 77 0c 2c 2f 1a dev7.......w.,/.
0130 79 2a ff 00 00 00 00 00 00 00 00 00 00 00 00 00 y*..............
0140 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0150 00 00 00 00 00 00 ......