MACアドレスを変更した後、インターネットに接続できない

私はあなたのMACアドレスをリストから選択したメーカーのMACアドレスに変更するBAShスクリプトを作成しました。スクリプトの実行の最後の部分では、完了する前に停止します。その部分のコードは次のとおりです。

function spoofUseMAC() {

  echo
  read -p "[*] $($stopAllFX; $bgBlack; $white)Enter the number code for manufacturer: >>> " num
  echo "[-] Generating MAC Address"
  num=$( expr $num - 1 )
  declare -a array
  while read -r; do
    array+=( "$REPLY" )
  done < addr.txt
  end=$( for i in {1..6} ; do echo -n ${hexchars:$(( $RANDOM % 16 )):1} ; done | sed -e 's/\(..\)/:\1/g' )
  macAddress=${array[$num]}$end
  echo "[-] MAC Address generated !"
  echo "[-] Using address: $macAddress"

  $skyBlue; $bold; echo
  ifconfig
  $white
  read -p "[*] $($stopAllFX; $bgBlack; $white)Select an interface: >>> " iface
  $yellow; echo "[-] $iface selected !"
  $white; echo  "[-] Disabling $iface ..."
  ifconfig $iface down
  ifconfig '$iface' hw ether '$macAddress'
  echo "[-] MAC Address spoofed !"
  sleep 1
  echo "[-] Enabling $iface ..."
  ifconfig '$iface' up
  echo "[-] $iface enabled !"
  echo "[-] Using address: $macAddress"
  exit

}

function spoofSearchAgainOrNot() {

  $bold; $white; echo
  echo "[*] $($stopAllFX; $bgBlack; $white)Please select an option from the list below:"
  $yellow; $bold; echo "        [$($white)0$($yellow)] $($stopAllFX; $bgBlack; $white)Search again"
  $yellow; $bold; echo "        [$($white)1$($yellow)] $($stopAllFX; $bgBlack; $white)Use one of these"
  read -p ">>> " searchAgainOrNot
  if [[ "$searchAgainOrNot" == "0" ]]; then
    spoofSearch
  elif [[ "$searchAgainOrNot" == "1" ]]; then
    spoofUseMAC
  else
    spoofSearchAgainOrNot
  fi

}

# Spoof, search option selected
function spoofSearch() {

  $bold; echo
  read -p "[*] $($stopAllFX; $bgBlack; $white)Search for a manufacturer: >>> " search
  $blue; awk -F '#' '{printf("%10d %s\n", NR, ":" $1 )}' /usr/bin/oui.txt | grep -i $search

  spoofSearchAgainOrNot

}

# Spoof
function spoof() {

  echo; $white
  echo "[*] $($stopAllFX; $bgBlack; $white)Please select an option from the list below:"
  $yellow; $bold; echo "        [$($white)0$($yellow)] $($stopAllFX; $bgBlack; $white)Search for a manufacturer"
  $yellow; $bold; echo "        [$($white)1$($yellow)] $($stopAllFX; $bgBlack; $white)Browse for a manufacturer through $($bold)long $($stopAllFX; $bgBlack; $white)list"
  read -p ">>> " searchOrBrowse
  if [[ $searchOrBrowse == "0" ]]; then
    spoofSearch
  elif [[ $searchOrBrowse == "1" ]]; then
    spoofBrowse
  else
    spoof
  fi

}

このスクリプトを実行した後、なぜインターネットを使用できないのですかgit clone？could not resolve hostname: github.comなぜまだ終わっていないのですか？

編集：これはMacOSとLinuxで動作します。 MacOSにはコマンドはありませんが、ip routeLinuxではip route次のようになります。

192.168.0.0/24 dev wlp1s0  proto kernel scope link  src 192.168.0.18 
192.168.0.0/24 dev wlp1s0  proto kernel scope link  src 192.168.0.18  metric 600