填空题
某客户机使用DHCP获取IP地址等信息，其获取IP地址过程中捕获的4条报文及对第2条报文分析如下所示。请分析其中的信息，补全内容。
编号 报文摘要
1 DHCP: Request, Type: DHCP discover
2 DHCP: Reply, Type: DHCP______
3 DHCP: Request, Type: DHCP Request
4 DHCP: Reply, Type: DHCP ACK
DLC: -----DLC Header-----
DLC: Destination=______
DLC: Source=001122334455
DLC: Ethertype=0800(IP)
IP: D=U______, S=192.168.0.1
______: D=68, S=67
DHCP: -----DHCP Header-----
DHCP: Boot record type =2(Reply)
DHCP: Hardware address type =1(10M Ethemet)
DHCP: Hardware address length =6bytes
DHCP: Hops =0
DHCP: Transaction id =6019121F
DHCP: Elapsed boot time =0seconds
DHCP: Flags=0000
DHCP: 0=no broadcast
DHCP: Client self-assigned address=[0.0.0.0]
DHCP: Client address=[192.168.0.180]
DHCP: Next Server to use in bootstrap=[0.0.0.0]
DHCP: Relay Agent=[0.0.0.0]
DHCP: Client hardware address=001234567890
HCPH: Host name=“”
DHCP: Boot file name=“”
DHCP: Vendor Information tag=53825276
DHCP: Message Type=2
DHCP: Address renewel interval=345600(seconds)
DHCP: Address rebinding interval=604800(seconds)
DHCP: Request IP Address leased time=691200(seconds)
DHCP: Sever IP Address=______
DHCP: Subnet mask=255.255.255.0
DHCP: Gateway address=[192.168.0.100]
DHCP: Domain Name Server address=[202.106.0.100]
【参考答案】
UDP