[Samba] Samba and dhcp ( with failover fails )

[L.P.H. van Belle]

Hai, 
 
Im trying to setup samba4 with dhcp server with failover mode enabled.
( yes, this is not directly samba related, but imo this is the best place to ask ) 
 
Anyone done this already? Single dhcp server works fine. 
If someone has this running, can i have some tips about the failover mode. 
Im betting it has something to do with the timings. 
 
When i enable the failover setup, and when a pc starts, it tries to update the dns records on both servers. 
Even when i first cleanup the dhcp lease. 
 
So if anyone has any suggestion to get this working, would be nice ;-) 
 
Thanks ! 
 
Louis