linux – 配置DHCP服务器以在同一VLAN上为多个子网提供服务

DHCP服务器(100.100.25.88)是子网100.100.25.64/27上的Debian计算机.我想为子网100.100.68.0/24中的计算机分配IP地址.最终目标是在100.100.68.0/24子网中的所有计算机上启用PXE引导.

下面是我的dhcpd.conf文件,

# DHCP Configuration file
use-host-decl-names on;
ddns-update-style interim;
ignore client-updates;
next-server 100.100.25.88;

# Subnet of DHCP server
subnet 100.100.25.64 netmask 255.255.255.224 {
        option subnet-mask              255.255.255.224;
        range dynamic-bootp             100.100.25.66 100.100.25.94;
        default-lease-time              21600;
        max-lease-time                  43200;
        option domain-name-servers      100.100.25.69,100.100.44.21;
        option routers                  100.100.25.65;
        filename "pxelinux.0";
}

# Subnet of client machines
subnet 100.100.68.0 netmask 255.255.255.0 {
        range dynamic-bootp             100.100.68.10 100.100.68.200;
        option subnet-mask              255.255.255.0;
        default-lease-time              21600;
        max-lease-time                  43200;
        option domain-name-servers      100.100.25.69,100.100.44.21;
        option routers                  100.100.68.1;
        option broadcast-address        100.100.68.255;
        filename "pxelinux.0";
        allow unknown-clients;
}

我理解DHCP的方式,DHCP服务器应该将数据包广播到为第二个子网100.100.68.255指定的广播地址.但是,没有客户端能够检索IP地址.这是我的DHCP配置中的错误,还是因为路由器不启用DHCP中继？

谢谢！