bRoadLanner BRL-01 (5.09.37p) でDHCPでのIPアドレス取得に成功する場合のDHCP Discover




  Flags:        0x00
  Status:       0x01
  Packet Length:346
  Timestamp:    17:40:40.987000 08/14/2000
Ethernet Header
  Destination:  FF:FF:FF:FF:FF:FF
  Source:       00:90:CC:A6:16:F3
  Protocol Type:0x0800  IP
IP Header - Internet Protocol Datagram
  Version:              4
  Header Length:        5  (20  bytes)
  Precedence:           0
  Type of Service:      %0000
  Unused:               %0
  Total Length:         328
  Identifier:           1
  Fragmentation Flags:  %000
  Fragment Offset:      0  (0  bytes)
  Time To Live:         31
  IP Type:              0x11  UDP
  Header Checksum:      0x9AA5
  Source IP Address:    0.0.0.0
  Dest. IP Address:     255.255.255.255
  No Internet Datagram Options
UDP - User Datagram Protocol
  Source Port:          68  Bootstrap (BOOTP Client)
  Destination Port:     67  Bootstrap Protocol Server
  Length:               308　　　　←−−−−−−−−−−−−−−ここが308以上でないといけない
  Checksum:             0x0ED1
BootP - Bootstrap Protocol
  Operation:                    1  Boot Request
  Hardware Address Type:        1  Ethernet (10Mb)
  Hardware Address Length:      6  bytes
  Hops:                         0
  Transaction ID:               990
  Seconds Since Boot Start:     0
  Flags:                        0x0000
  IP Address Known By Client:   0.0.0.0  IP Address Not Known By Client
  Client IP Addr Given By Srvr: 0.0.0.0
  Server IP Address:            0.0.0.0
  Gateway IP Address:           0.0.0.0
  Client Hardware Address:      00:90:CC:A6:16:F3
  Unused:                       0x00000000000000000000
  Server Host Name:
  ................  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  ................  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  ................  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  ................  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  Boot File Name:
  ................  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  ................  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  ................  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  ................  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  ................  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  ................  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  ................  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  ................  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
DHCP - Dynamic Host Configuration Protocol
  DHCP Magic Cookie:            0x63825363
  Message TypeDHCP Option
    Option Code:        53  Message Type
    Option Length:      1
    Message Type:       1  Discover
  Client IdentifierDHCP Option
    Option Code:        61  Client Identifier
    Option Length:      7
    Hardware Type:      1
    Hardware Address:   00:90:CC:A6:16:F3
  Requested IP AddressDHCP Option
    Option Code:        50  Requested IP Address
    Option Length:      4
    Address:            10.64.24.123
  Host Name AddressDHCP Option
    Option Code:        12  Host Name Address
    Option Length:      6
    String:             brl01.
  Parameter Request ListDHCP Option
    Option Code:        55  Parameter Request List
    Option Length:      4
    Requested Option:   1  Subnet Mask
    Requested Option:   3  Routers
    Requested Option:   6  Domain Name Servers
    Requested Option:   15  Domain Name
  DHCP Option End
    Option Code:        255  End
Extra bytes (Padding):　　　　←−−−−−−−−−−−−−−データ長調整用のパディング
  ................  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  ...........       00 00 00 00 00 00 00 00 00 00 00
Frame Check Sequence:  0x00000000