Question about temporary pf(4) ruleset in: /etc/rc

Hi,

I have a question regarding the temporary pf(4) ruleset that is found
in: /etc/rc.

A couple of lines below: "# Set initial temporary pf rule set." there
appears to be two lines for DHCPv4 traffic:

pass out inet proto udp from any port bootpc to any port bootps
pass in inet proto udp from any port bootps to any port bootpc

... however, I was under the impression that pf(4) does not require
rules for DHCPv4 traffic because that is done via BPF *before* pf(4)
rules.

If that is the case, could the explicit DHCPv4 rules be left out ?

Thanks,

- J