diff --git a/Linux_reinstall/InstallNET.sh b/Linux_reinstall/InstallNET.sh
index 046f3e1..30cb8d8 100644
--- a/Linux_reinstall/InstallNET.sh
+++ b/Linux_reinstall/InstallNET.sh
@@ -510,7 +510,7 @@ function transferIPv4AddressFormat() {
 # Common ranges of IPv4 intranet:
 # Reference: https://hczhang.cn/network/reserved-ip-addresses.html
   [[ "$ip4AddrFirst""$ip4AddrSecond" != "$ip4GateFirst""$ip4GateSecond" ]] && {
-    [[ "$ip4GateFirst" == "169" && "$ip4GateSecond" == "254" ]] || [[ "$ip4GateFirst" == "172" && "$ip4GateSecond" -ge "16" && "$ip4GateSecond" -le "31" ]] || [[ "$ip4GateFirst" == "10" && "$ip4GateSecond" -ge "0" && "$ip4GateSecond" -le "255" ]] || [[ "$ip4GateFirst" == "192" && "$ip4GateSecond" == "168" ]] || [[ "$ip4GateFirst" == "127" && "$ip4GateSecond" -ge "0" && "$ip4GateSecond" -le "255" ]] || [[ "$ip4GateFirst" == "198" && "$ip4GateSecond" -ge "18" && "$ip4GateSecond" -le "19" ]] || [[ "$ip4GateFirst" == "100" && "$ip4GateSecond" -ge "64" && "$ip4GateSecond" -le "127" ]] && {     
+    [[ "$ip4AddrFirst" != "$ip4GateFirst" ]] || [[ "$ip4GateFirst" == "169" && "$ip4GateSecond" == "254" ]] || [[ "$ip4GateFirst" == "172" && "$ip4GateSecond" -ge "16" && "$ip4GateSecond" -le "31" ]] || [[ "$ip4GateFirst" == "10" && "$ip4GateSecond" -ge "0" && "$ip4GateSecond" -le "255" ]] || [[ "$ip4GateFirst" == "192" && "$ip4GateSecond" == "168" ]] || [[ "$ip4GateFirst" == "127" && "$ip4GateSecond" -ge "0" && "$ip4GateSecond" -le "255" ]] || [[ "$ip4GateFirst" == "198" && "$ip4GateSecond" -ge "18" && "$ip4GateSecond" -le "19" ]] || [[ "$ip4GateFirst" == "100" && "$ip4GateSecond" -ge "64" && "$ip4GateSecond" -le "127" ]] && {     
       # [[ -z "$ip4RouteScopeLink" ]] && ipGate=`ipv4Calc "$1" "$ipPrefix" | grep "FirstIP:" | awk '{print$2}'` || ipGate=`ipv4Calc "$ip4RouteScopeLink" "$ipPrefix" | grep "FirstIP:" | awk '{print$2}'`
 # Temporary installation of Debian is "BusyBox", it can't handle IPv4 public address and IPv4 private gateway well, so we prefer to use IPv6 to configure network and write static configs for IPv4 in later of installation.
       [[ "$IPStackType" == "BiStack" ]] && { ipPrefix="$actualIp4Prefix"; ipMask="$actualIp4Subnet"; BiStackPreferIpv6='1'; Network4Config="isStatic"; }