Conflicts and network boot

[Bruno Gola]

Good night (here in Brazil) everyone :-)
I'm new to the mailing-list and to dhcpd, and i'm already having problems ;(

The situation is: iin my office we have a dhcp server (that i dont have
access to)  that controls all machines. But, i need to netboot some
machines. 'till yesterday i was able to do this using bootp, pxelinux and
tftp, but we have a new machine and this one cant use bootp for this task,
so i need to migrate my bootp server to dhcp (what i've already did). The
machine that was booting with the bootp server, now is booting with the dhcp
(wich i set up for allowing bootp requests) fine, but my new machine doesn't
boot. Take a look at this log:

#####
Mar 17 18:24:40 dostoieviski dhcpd: DHCPDISCOVER from 00:0c:29:88:3d:eb via
eth0                    <--- this is my new machine trying
Mar 17 18:24:40 dostoieviski dhcpd: DHCPOFFER on 172.16.7.206 to
00:0c:29:88:3d:eb via eth0     <---- this is my new dhcp server
Mar 17 18:24:42 dostoieviski dhcpd: DHCPREQUEST for 172.16.200.113 (
172.16.0.1) from 00:0c:29:88:3d:eb via eth0: ignored (not
authoritative).                                   172.16.0.1 is the
principal dhcp server
#####

and look this (i've used snort to see)


03/17-18:24:40.198628 0.0.0.0:68 -> 255.255.255.255:67
(the machine sending a DHCPDISCOVER)
UDP TTL:20 TOS:0x0 ID:0 IpLen:20 DgmLen:576
Len: 548
=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+

03/17-18:24:40.202439 172.16.0.1:67 -> 255.255.255.255:68
(the old dhcp server replying)
UDP TTL:128 TOS:0x0 ID:4271 IpLen:20 DgmLen:376
Len: 348
=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+

03/17-18:24:40.210248 172.16.7.101:67 -> 255.255.255.255:68
(my new dhcp server)
UDP TTL:64 TOS:0x10 ID:0 IpLen:20 DgmLen:328
Len: 300
=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+

--
03/17-18:24:42.280418 0.0.0.0:68 -> 255.255.255.255:67
UDP TTL:20 TOS:0x0 ID:1 IpLen:20 DgmLen:576
Len: 548
=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+

03/17-18:24:42.281635 172.16.0.1:67 -> 255.255.255.255:68
UDP TTL:128 TOS:0x0 ID:4307 IpLen:20 DgmLen:395
Len: 367
=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+

I think the old dhcp server cant handle bootp stuff, so thats why my old
machine can boot, but my new machine uses dhcp, so the old server conflicts
with my new server and the client gets information from the old one.

my dhcpd.conf:

group {
        allow booting;
        allow bootp;

        option domain-name "eversystems.net";
        option routers 172.16.1.254;
        option subnet-mask 255.255.0.0;
        option domain-name-servers 172.16.0.1;

        next-server 172.16.7.101;
        filename "pxelinux.0";

        host tchekov {
                hardware ethernet 00:14:22:7A:7D:3C;
                fixed-address 172.16.7.202;
        }

        host pushkin {
                hardware ethernet 00:12:3F:76:83:94;
                fixed-address 172.16.7.204;
        }

        host testebgola {
                hardware ethernet 00:0C:29:88:3D:EB;
                fixed-address 172.16.7.206;
        }
}

subnet 172.16.7.0 netmask 255.255.255.0 {

}

Does anyone knows anyway to solve this conflict?

Thanks and sorry my english =),
--
Bruno Fialho Marques Gola <brunogola at gmail.com>
http://www.brunogola.com.br
Cel: (11) 9294-5883