ipf.rules

[Francis Whittington]

Hi Folks,
    I have the firewall/router box going, under V5.3. It says in ipf.rules to:

# Allow out access to my ISP's DHCP server for cable or DSL networks.
# This rule is not needed for 'user ppp' type connection to the
# public Internet, so you can delete this whole group.
# Use the following rule and check log for IP address.
# Then put IP address in commented out rule & delete first rule
pass out log quick on dc0 proto udp from any to any port = 67 keep state
#pass out quick on dc0 proto udp from any to z.z.z.z port = 67 keep state

How do I know which ip address I am looking for to put in place of "z.z.z.z. port= 67 keep state" in the rule that is saved. 

                                              Thanks
                                            fewjr/Buddy