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ddns-update-style interim;              配置使用过渡性 DHCP-DNS互动更新模式 
ignore client-updates;                     忽略客户端更新

subnet 192.168.0.0 netmask 255.255.255.0 {               设置子网声明

# --- default gateway
    option routers            192.168.0.1;                  设置缺省网关          
    option subnet-mask        255.255.255.0;            设置客户端的子网掩码

    option nis-domain        "domain.org";                           为客户设置NIS
    option domain-name        "domain.org";                       为客户设置域名
    option domain-name-servers    192.168.1.1;               为客户设置域名服务器

    option time-offset        -18000;    # Eastern Standard Time         设置偏移时间
#    option ntp-servers        192.168.1.1;                                设置NTP服务器
#    option netbios-name-servers    192.168.1.1;                   设置wins服务器
# --- Selects point-to-point node (default is hybrid). Don't change this unless
# -- you understand Netbios very well
#    option netbios-node-type 2;                            设置netbios节点类型

    range dynamic-bootp 192.168.0.128 192.168.0.254;           设置动态的地址池 
    default-lease-time 21600;                        设置缺省的地址租期
    max-lease-time 43200;                             设置客户端最长的地址租期

    # we want the nameserver to appear at a fixed address      设置主机声明
    host ns {                                            
        next-server marvin.redhat.com;              设置由于定义服务器从引导文件中装入的主机名,用于无盘站      
        hardware ethernet 12:34:56:78:AB:CD;                  指定dhcp客户的mac地址
        fixed-address 207.175.42.254;                           给指定的mac地址分配ip
    }
}