Why all the HBA "ff" Even then, do I get the OFFER from the secondary?

[Yoshihiro takahashi]

Hi.

Why all the HBA "ff" Even then, do I get the OFFER from the secondary?
All "ff", primary is 100%, secondary is 0% would not treat?
but dhcp-4.2.2 carried out a different motion.

hba ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:
    ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff;

Best regards,

* Primary(dhcpd.conf)
failover peer "adapter" {
  primary;               
  address 10.2.101.132;  
  port 519;              
  peer address 10.2.101.133;
  peer port 520;            
  max-response-delay 60;    
  max-unacked-updates 10;   
  mclt 180;                 
  hba ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:
  ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff;    
  load balance max seconds 3;                          
}                                                      
min-lease-time 10;  
default-lease-time 600;
max-lease-time 3600; 
ping-check true;
log-facility local6;      
ignore bootp;    
ddns-update-style none;
authoritative;
include "/usr/local/adapter/dhcp/etc/dhcpd.conf.subnet10.1.20.0";
include "/usr/local/adapter/dhcp/etc/dhcpd.conf.subnet10.1.30.0";
include "/usr/local/adapter/dhcp/etc/dhcpd.conf.subnet10.2.101.0";

* Secondary(dhcpd.conf)
failover peer "adapter" {
  secondary;             
  address 10.2.101.133;  
  port 520;              
  peer address 10.2.101.132;
  peer port 519;            
  max-response-delay 60;    
  max-unacked-updates 10;   
  load balance max seconds 3;                          
}                                                      
min-lease-time 10;  
default-lease-time 600;
max-lease-time 3600; 
ping-check true;
log-facility local6;      
ignore bootp;    
ddns-update-style none;
authoritative;
include "/usr/local/adapter/dhcp/etc/dhcpd.conf.subnet10.1.20.0";
include "/usr/local/adapter/dhcp/etc/dhcpd.conf.subnet10.1.30.0";
include "/usr/local/adapter/dhcp/etc/dhcpd.conf.subnet10.2.101.0";