fix: Zscaler and Cloudflare WARP not detected in CGNAT IP range

Casks/vpn-bypass.rb

@@ -3,7 +3,7 @@
 # Or if using local tap: brew install --cask --no-quarantine ./Casks/vpn-bypass.rb
 
 cask "vpn-bypass" do
-  version "1.7.0"
+  version "1.7.1"
   sha256 "37b127a55aec0bdb80e824e59e840ce5b529c09086aac7fc24dc4616abb817bd"
 
   url "https://github.com/GeiserX/VPN-Bypass/releases/download/v#{version}/VPN-Bypass-#{version}.dmg"

Info.plist

@@ -17,7 +17,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.7.0</string><!-- VERSION -->
+	<string>1.7.1</string><!-- VERSION -->
 	<key>CFBundleVersion</key>
 	<string>19</string>
 	<key>LSMinimumSystemVersion</key>

README.md

@@ -11,7 +11,7 @@
 <p align="center">
   <img src="https://img.shields.io/badge/macOS-13%2B-blue" alt="macOS 13+">
   <img src="https://img.shields.io/badge/Swift-5.9-orange" alt="Swift 5.9">
-  <a href="https://github.com/GeiserX/VPN-Bypass/releases"><img src="https://img.shields.io/badge/version-1.7.0-green" alt="Version"></a>
+  <a href="https://github.com/GeiserX/VPN-Bypass/releases"><img src="https://img.shields.io/badge/version-1.7.1-green" alt="Version"></a>
 </p>
 
 ## Why?

Sources/RouteManager.swift

@@ -712,7 +712,7 @@ final class RouteManager: ObservableObject {
         var vpnCandidates: [(name: String, ip: String, isValid: Bool)] = []
 
         for i in interfaces.indices {
-            let isValid = await isCorporateVPNIP(interfaces[i].ip)
+            let isValid = await isCorporateVPNIP(interfaces[i].ip, hintType: hintType)
             interfaces[i].isValidCorporateIP = isValid
 
             // Track VPN candidates for debugging
@@ -765,7 +765,8 @@ final class RouteManager: ObservableObject {
     }
 
     /// Check if IP is likely a corporate VPN (not Tailscale mesh, not localhost, etc.)
-    private func isCorporateVPNIP(_ ip: String) async -> Bool {
+    /// hintType comes from process detection -- used to distinguish Zscaler/WARP from Tailscale in the shared CGNAT range.
+    private func isCorporateVPNIP(_ ip: String, hintType: VPNType?) async -> Bool {
         let parts = ip.components(separatedBy: ".")
         guard parts.count == 4,
               let first = Int(parts[0]),
@@ -779,29 +780,20 @@ final class RouteManager: ObservableObject {
         // Skip link-local
         if first == 169 && second == 254 { return false }
 
-        // Tailscale CGNAT range (100.64.0.0/10 = 100.64-127.x.x)
-        // Only consider Tailscale as VPN if it's using an exit node (routing all traffic)
+        // CGNAT range (100.64.0.0/10 = 100.64-127.x.x)
+        // Shared by Tailscale, Zscaler, Cloudflare WARP, and other VPNs.
+        // If a known non-Tailscale VPN process was detected, trust it.
+        // Otherwise fall back to Tailscale exit-node check.
         if first == 100 && second >= 64 && second <= 127 {
+            if let hint = hintType, hint != .tailscale, hint != .unknown {
+                return true
+            }
             return await isTailscaleExitNodeActive()
         }
 
-        // Cloudflare WARP range (check for WARP-specific IPs)
-        // WARP uses 100.96.0.0/12 range
-        if first == 100 && second >= 96 && second <= 111 {
-            return true // WARP is active
-        }
-
-        // Zscaler typically uses 100.64.x.x or custom ranges
-        // Already covered by CGNAT check above
-
         // Corporate VPNs typically use private ranges
-        // 10.0.0.0/8 - Most corporate VPNs use this
         if first == 10 { return true }
-
-        // 172.16.0.0/12 (172.16-31.x.x)
         if first == 172 && second >= 16 && second <= 31 { return true }
-
-        // 192.168.0.0/16 - Less common for VPN but possible
         if first == 192 && second == 168 { return true }
 
         return false

Sources/SettingsView.swift

@@ -1263,7 +1263,7 @@ struct GeneralTab: View {
             HStack {
                 VStack(alignment: .leading, spacing: 2) {
                     BrandedAppName(fontSize: 13)
-                    Text("Version 1.7.0")
+                    Text("Version 1.7.1")
                         .font(.system(size: 11))
                         .foregroundColor(Color(hex: "6B7280"))
                 }
@@ -1721,7 +1721,7 @@ struct InfoTab: View {
             // App name with branded colors
             BrandedAppName(fontSize: 24)
 
-            Text("v1.7.0")
+            Text("v1.7.1")
                 .font(.system(size: 12, design: .monospaced))
                 .foregroundColor(Color(hex: "6B7280"))
 

docs/CHANGELOG.md

@@ -5,6 +5,11 @@ All notable changes to VPN Bypass will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.7.1] - 2026-02-24
+
+### Fixed
+- **Zscaler Detection** - Zscaler (and Cloudflare WARP) use CGNAT IPs (`100.64.x.x`) which were incorrectly treated as Tailscale-only, causing `valid=false` rejection. Now trusts the process-detection hint to distinguish Zscaler/WARP from Tailscale in the shared CGNAT range.
+
 ## [1.7.0] - 2026-02-22
 
 ### Added