#!/bin/sh

# Loop through each hardware port and device pair
networksetup -listallhardwareports | awk '
/^Hardware Port:/ {interface_name=$3; for(i=4;i<=NF;i++){interface_name=interface_name" "$i}} 
/^Device:/ {print interface_name, $2}' | \
while read interface_name interface; do
    # Get the IP address for the current interface
    ip=$(ipconfig getifaddr "$interface" 2>/dev/null)
    
    if [ -n "$ip" ]; then
        echo "restarting interface $interface ($interface_name)"
        
        # Disable and enable network service by hardware port name
        networksetup -setnetworkserviceenabled "$interface_name" off
        networksetup -setnetworkserviceenabled "$interface_name" on
    fi
done