Dhcpd on LAN with multiple NIC

[nima.m]

I notice this strange problem :

I have 4 NIC, first NIC is WAN, the second is for LAN, and the third and forth NIC is bridged with LAN. (OPT1,OPT2)
dhcpd is activated for LAN.

Now, If have a 3 computer plugged to LAN,OPT1 and OPT2, Then the computers connected to firewall get new IP from dhcpd.
However, If I shutdown the computer that was connected TO LAN nic, the other two computer doesn't get any IP from dhcp.

Is this naturel ?

I am using pfsense BETA 4.

[hoba]

Unfortunately all interfaces of a bridge have to be up for the other interfaces to work. This is a known limitation.