Stranger problem Samba/DHCP

[Marcus Grando]

Hello list,

I have a internal network with IPs 10.0.0.0/9, and configure DHCP server 
for pool the IPs, based on host-name (equivalent at machine name).

When running the new configuration on DHCP, the machines get IP normally. 
But Samba (PDC) negate new any conections on shares. The machines 
configured to node-type = 2. If configure Windows 95/98/2000/XP to import 
LMHOSTS, the machine works.

I review the smb.cond and dhcpd.conf and not work, but when start dhcpd 
with old configuration, Samba works normally.

The old configuration is not pool configuration, any machines on same 
subnet (10.0.6.0/24), and with pool configuration machines get IPs of 
several subnets (10.0.6.0/24, 10.0.11.0/24, 10.0.12.0/24, 
10.0.13.0/24...).

Any ideas when resolv this problem?

My smb.conf and dhcpd.conf.

dhcpd.conf (OLD)
----------------
log-facility local7;
ddns-update-style none;
default-lease-time 86400;
max-lease-time 129600;
option netbios-name-servers X.X.X.X;
option domain-name-servers X.X.X.X, X.X.X.X;
option netbios-dd-server X.X.X.X;
option netbios-node-type 2;
option netbios-scope "";
option ntp-servers X.X.X.X;
option ip-forwarding off;

subnet 10.0.0.0 netmask 255.128.0.0
{
        range 10.0.6.1 10.0.6.254;
        option routers 10.0.0.1;
        option domain-name "6.0.10.internal";
}

dhcpd.conf (NEW)
----------------
log-facility local7;
ddns-update-style none;
default-lease-time 86400;
max-lease-time 129600;
option netbios-name-servers X.X.X.X;
option domain-name-servers X.X.X.X, X.X.X.X;
option netbios-dd-server X.X.X.X;
option netbios-node-type 2;
option netbios-scope "";
option ntp-servers X.X.X.X;
option ip-forwarding off;

class "Lab1" {
        match if (
                (substring(option host-name,0,4) = "Lab1") or
                (substring(option host-name,0,4) = "lab1") or
                (substring(option host-name,0,4) = "LAB1") );
}
class "Lab2" {
        match if (
                (substring(option host-name,0,4) = "Lab2") or
                (substring(option host-name,0,4) = "lab2") or
                (substring(option host-name,0,4) = "LAB2") );
}
class "Lab3" {
        match if (
                (substring(option host-name,0,4) = "Lab3") or
                (substring(option host-name,0,4) = "lab3") or
                (substring(option host-name,0,4) = "LAB3") );
}
class "Lab4" {
        match if (
                (substring(option host-name,0,4) = "Lab4") or
                (substring(option host-name,0,4) = "lab4") or
                (substring(option host-name,0,4) = "LAB4") );
}

subnet 10.0.0.0 netmask 255.128.0.0
{
        option routers 10.0.0.1;

        pool {
                deny members of "Lab1";
                deny members of "Lab2";
                deny members of "Lab3";
                deny members of "Lab4";
                range 10.0.6.1 10.0.6.254;
                option domain-name "6.0.10.internal";
        }
        pool {
                allow members of "Lab1";
                range 10.0.11.1 10.0.11.35;
                option domain-name "11.0.10.internal";
        }
        pool {
                allow members of "Lab2";
                range 10.0.12.1 10.0.12.35;
                option domain-name "12.0.10.internal";
        }
        pool {
                allow members of "Lab3";
                range 10.0.13.1 10.0.13.35;
                option domain-name "13.0.10.internal";
        }
        pool {
                allow members of "Lab4";
                range 10.0.14.1 10.0.14.35;
                option domain-name "14.0.10.internal";
        }
}

smb.conf
--------
[global]

   workgroup = BIG
   netbios name = Isto
   server string = Servidor %L (%v)
   log level = 1
   log file = /var/samba/%m
   security = user
   admin users = @ti
   hosts allow = X.X.X.X/24 10.0.0.0/8
   password level = 14
   encrypt passwords = yes
   smb passwd file = /etc/smbpasswd
   socket options = IPTOS_LOWDELAY TCP_NODELAY SO_SNDBUF=8192 SO_RCVBUF=8192
   large readwrite = yes
   interfaces = 127.0.0.1/8 X.X.X.X/27
   deadtime = 15
   os level = 80
   announce version = 6.0
   browse list = no
   local master = yes
   preferred master = yes
   domain master = yes
   domain logons = yes
   logon drive = x:
   logon script = scripts\%m.bat
   logon home = \\%L\%U
   logon path = \\%L\profiles\%U
   wins support = yes
   name resolve order = wins lmhosts host
   time server = yes
   time offset = 0
   character set = ISO8859-1
   preserve case = yes
   mangle case = yes
   veto files = /.?*/lost+found/quota.*/dead.*/
   hide files = /eco/profile/

############################# Share Definitions ############################
[homes]
   comment = %U
   writeable = yes
   create mask = 0664
   directory mask = 0775
   preexec = /home2/samba/scripts/ajusta-home.sh %U

[netlogon]
   comment = Network Logon Service
   path = /home2/samba/netlogon
   browseable = no
   guest ok = yes
   writable = no
   write list = @ti
   create mask = 0664
   directory mask = 0775

[profiles]
   comment = User Profiles
   path = %H/profile
   browseable = no
   writable = yes
   create mask = 0600
   directory mask = 0700

[programs]
   comment = Programas Compartilhados
   path = /home2/samba/programs
   writeable = yes
   create mask = 0664
   directory mask = 0775

Regards.

-- 
Marcus Grando
Tecnologia da Informação
<marcus at big dot univali dot br>
<marcus at sbh dot eng dot br>