Kerio 2.15 question about zero octet with DHCP

To ipconfig/renew IP, Kerio alerts/blocks about inbound UDP from MyComputerName [0.0.0.0:68] -> localhost:67; Owner: no owner.
How would we write a rule when zero octet is blocked in the context of DHCP right after broadcast?
0.0.0.0:68 in this instance is my computer, as is the destination localhost:67

I rarely do ipconfig/release and renew, but had to do it today. I do get IP so no issues here. But still, I wonder how one would write a rule to cover this?
DHCP server is my router. Windows XP.