HELP! --> CMTS MOTOROLA BSR64000

I really need a help!!!

I'm having trouble to put my cable modems 2.0 and 3.0 work with BSR64000.
- I see the DHCP Server offering IP (Ubuntu Server + ISC DHCP Server 4.x)
- I see the cable modems on the CMTS.
- I see the IPs offered to cable but they don't lock, don't get the file from tftp server. But the tft server is working fine.

CMTS:
VIPRIO01:7A#show cable modem
Intf Prim Prim Prim Connect Timing RxPwr Ip Address Mac Address
Cable DS US Sid State Offset dBmV
1/0 1D0C0 U1C0L0 0 offline 0 0.0.0.0 0023.4d0a.9594
1/0 14D0C3 U1C0L0 0 offline 0 0.0.0.0 0024.d1f4.62e6
1/0 1D1C0 U1C0L0 0 offline 0 0.0.0.0 5435.30f9.f383
1/0 1D1C0 U1C0L0 0 offline 0 0.0.0.0 c417.fee4.5541
1/0 14D0C3 U1C0L0 1 dhcp(d) 997 0.5 0.0.0.0 e0ce.c3c5.35ba

PS: I Have a PICO CMTS Mini running with the same configuration, with the same file for all cablemodems and works fine.
For now i'm not limiting the connection speed.

Small visualization from syslog:
Oct 21 16:52:43 proxy-cache dhcpd: c4:17:fe:e4:55:41
Oct 21 16:52:43 proxy-cache dhcpd: DHCPDISCOVER from c4:17:fe:e4:55:41 via 10.15.1.1
Oct 21 16:52:44 proxy-cache dhcpd: DHCPOFFER on 10.15.1.132 to c4:17:fe:e4:55:41 via 10.15.1.1
Oct 21 16:52:47 proxy-cache dhcpd: docsis3.0:
Oct 21 16:52:47 proxy-cache dhcpd: c4:17:fe:e4:55:41
Oct 21 16:52:47 proxy-cache dhcpd: DHCPDISCOVER from c4:17:fe:e4:55:41 via 10.15.1.1
Oct 21 16:52:47 proxy-cache dhcpd: DHCPOFFER on 10.15.1.132 to c4:17:fe:e4:55:41 via 10.15.1.1
Oct 21 16:52:56 proxy-cache dhcpd: docsis3.0:
Oct 21 16:52:56 proxy-cache dhcpd: c4:17:fe:e4:55:41
Oct 21 16:52:56 proxy-cache dhcpd: DHCPDISCOVER from c4:17:fe:e4:55:41 via 10.15.1.1
Oct 21 16:52:56 proxy-cache dhcpd: DHCPOFFER on 10.15.1.132 to c4:17:fe:e4:55:41 via 10.15.1.1

My dhcpd.conf:
=========
option routers 10.15.0.2;
option tftp-server-name "10.15.0.2";
option time-offset -10800;
option option-170 code 170 = string;
option option-171 code 171 = string;
option option-172 code 172 = string;
option bootfile-name "CM-BASIC-mib.cfg";
filename "CM-BASIC-mib.cfg";
option domain-name "viprio.localhost";
option domain-name-servers 8.8.8.8, 8.8.4.4;
option vivso 00:00:11:8b:0a:02:08:0a:10:00:04:0a:11:00:04;
option time-servers 200.144.121.33;
option ntp-servers 200.144.121.33;
server-identifier 10.15.0.2;
deny unknown-clients;
default-lease-time 12900;
max-lease-time 3600;
next-server 10.15.0.2;
log-facility local7;
authoritative;

class "cm" {

match if substring(option vendor-class-identifier,0,6) = "docsis";

log(info, option vendor-class-identifier );
log(info, binary-to-ascii(16, 8, ":", substring(hardware, 1, 6)) );
}

shared-network cm-cpe {
subnet 172.16.8.0 netmask 255.255.255.0 {
}
subnet 10.15.0.0 netmask 255.255.0.0 {
next-server 10.15.0.2;
range dynamic-bootp 10.15.1.100 10.15.255.200;
}

subnet 10.16.0.0 netmask 255.255.0.0 {
option routers 10.16.0.1;
pool {
deny members of "cm";
range dynamic-bootp 10.16.0.10 10.16.5.254;
}
}
}

#Small sample:

host Cable-Tester-CMTS-BSR64000-1 {
hardware ethernet 00:24:d1:f4:62:e6;
filename "ubee-55MB-02.cm";
}

host Cable-LANHOUSE-UBEE {
hardware ethernet 54:35:30:f9:f3:84;
filename "CM-BASIC-mib.cfg";
}

host Cable-LANHOUSE-UBEE-1 {
hardware ethernet 54:35:30:f9:f3:83;
filename "CM-BASIC-mib.cfg";
}

---------- CM-BASIC-mib.cfg

Main
{
NetworkAccess 1;
MaxCPE 16;
GlobalPrivacyEnable 0;
UsServiceFlow
{
UsServiceFlowRef 1;
QosParamSetType 7;
SchedulingType 2;
}
DsServiceFlow
{
DsServiceFlowRef 5;
QosParamSetType 7;
}
GenericTLV TlvCode 53 TlvLength 48 TlvValue 0x01067075626c69630210010600000000000002060000000000000301020411646f637369734d616e6167657256696577;
GenericTLV TlvCode 53 TlvLength 49 TlvValue 0x0107707269766174650210010600000000000002060000000000000411646f637369734d616e6167657256696577030102;
GenericTLV TlvCode 55 TlvLength 1 TlvValue 0x01;
/* CmMic 4624d9999bfebdba1ea2a1fa042ff34d; */
/* CmtsMic 57e59f0176d3b33a661078dbf6ae5e7d; */
/*EndOfDataMkr*/
}