| code | length | congent |
|---|---|---|
| 0 | 0 | 填充字段 |
| 1 | 4 | 子网掩码 |
| 2 | 4 | 时间偏移 |
| 3 | 4*N | Route Add1；Route Add2；Route AddN； |
| 4 | ||
| 5 | ||
| 6 | 4*N | DNS Server1;DNS Server2;DNS ServerN |
| 7 | 4*N | LOG Server1;Log Server2;Log ServerN |
| 15 | N | 域名称（主DNS服务器名称 |
| 26 | 2 | Interface MTU |
| 33 | n*8 | Static route |
| 35 | 4 | ARP cache timeout |
| 42 | n*4 | NTP servers |
| 44 | N*4 | WINS Server1；WINS Server2；WINS ServerN |
| 51 | 4 | IP address lease time |
| 53 | 1 | Message type 1-DHCPDISCOVER 2-DHCPOFFER 3-DHCPREQUEST 4-DHCPDECLINE 5-DHCPACK 6-DHCPNAK 7-DHCPRELEASE 8-DHCPINFORM |
| 54 | 4 | DHCP Server Identifier |
| 58 | 4 | 续约时间 |
引用：1.(80条消息) DHCP报文及其格式_踏踏实实的。。。-CSDN博客_dhcp报文
2.DHCP报文解析-可怜的猪头-ChinaUnix博客
