Find a ip's a local server by mac address

profile.sh

findMinix() {
    local subnet="192.168.2"
    local enp1s0_mac="a0:1e:0b:0e:81:14"
    local wlan0_mac="cc:4b:73:8e:6c:8a"

    normalize_mac_simple() {
      echo "$1" | tr '[:upper:]' '[:lower:]' | awk -F: '{
        for(i=1;i<=NF;i++) {
          sub(/^0+/, "", $i);
          printf "%s%s", $i, (i==NF ? "\n" : ":")
        }
      }'
    }

    local norm_enp1s0_mac
    local norm_wlan0_mac
    norm_enp1s0_mac=$(normalize_mac_simple "$enp1s0_mac")
    norm_wlan0_mac=$(normalize_mac_simple "$wlan0_mac")

    echo "[*] Сканируем подсеть $subnet.0/24..."

    # Параллельный пинг с xargs, подавляем вывод
    seq 1 254 | xargs -P 50 -I{} ping -c 1 -W 1 "$subnet.{}" >/dev/null 2>&1

    echo "[*] Проверяем ARP таблицу..."

    arp -a | grep "$subnet" | while read -r line; do
      ip=$(echo "$line" | awk -F'[()]' '{print $2}')
      raw_mac=$(echo "$line" | grep -oE '([0-9a-fA-F]{1,2}:){5}[0-9a-fA-F]{1,2}')
      norm_mac=$(normalize_mac_simple "$raw_mac")

      if [[ "$norm_mac" == "$norm_enp1s0_mac" ]]; then
        echo "$ip"
      fi

      if [[ "$norm_mac" == "$norm_wlan0_mac" ]]; then
        echo "$ip"
      fi
    done

    echo "Done"
    return 0
}