DHCP not responding to BOOTP client request messages.

趙 良基 hijk123452001 at hotmail.com
Mon Oct 12 07:37:36 UTC 2020


1.       When DHCP Server enabled as Dynamic/Static IP Assignment and only Dynamic(DHCP Server) pools are enabled,
  DHCP Server  not responding with BOOTP Reply on receiving BOOTP request message.

When Static IP/IP port binding pools are enabled with respective pools, DHCP Server responded to received BOOTP request.
This issue occurs only with Dynamic IP Assignment.
So I add
allow bootp;
range dynamic-bootp 192.168.127.70 192.168.127.99;
to dhcpd.conf,it can response the bootp client ,but the bootp not use this response ip.
I attach the wireshark file is use tool tftpd32 dhcp server to response the bootp client and client use normal,
And linux dhcp server packet file.

dhcpd.conf:

authoritative;
allow bootp;

subnet 192.168.127.0 netmask 255.255.255.0 {
}

subnet 192.168.127.0 netmask 255.255.255.0 {
        default-lease-time 86400;
        max-lease-time 446400;
        range 192.168.127.22 192.168.127.55;
        range dynamic-bootp 192.168.127.70 192.168.127.99;
        option broadcast-address 192.168.127.255;
        option routers 192.168.127.0;
        option domain-name-servers  192.168.127.254;
}
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