Script to bring re0 up on my laptop

re0_up.zsh

#!/usr/local/bin/zsh

runit="true"

while [ ${runit} = "true" ]; do
    ps wwaux | grep dhclient | grep -q re0
    if [ ${?} -eq 0 ]; then
        breakout="false"
        while [ ${breakout} = "false" ]; do
            breakout="true"
            for pid in $(ps wwaux | grep dhclient | grep re0 | awk '{print $2;}'); do
                kill ${PID}
                sleep 3
                kill -KILL ${pid}

                breakout="false"
            done
        done
    fi

    ifconfig re0 down
    ifconfig re0 -tso
    sleep 15
    ifconfig re0 up
    sleep 15

    ifconfig re0 | grep -qF 'status: active'
    if [ ${?} -eq 0 ]; then
        dhclient re0
        ifconfig re0 | grep -q inet
        if [ ${?} -eq 0 ]; then
            ifconfig re0 | grep -qF 'inet 0.0.0.0'
            if [ ! ${?} -eq 0 ]; then
                pfctl -ef /etc/pf.conf
                break
            fi
        fi
    else
        runit="false"
    fi
done