diff --git a/core/server/test_utils.go b/core/server/test_utils.go
index f7d7864..a96fc21 100644
--- a/core/server/test_utils.go
+++ b/core/server/test_utils.go
@@ -137,7 +137,7 @@ func BatchURLTest(ctx context.Context, i *boxbox.Box, outboundTags []string, url
 				}
 				client := &http.Client{
 					Transport: &http.Transport{
-						DialContext: func(ctx context.Context, network string, addr string) (net.Conn, error) {
+						DialContext: func(_ context.Context, network string, addr string) (net.Conn, error) {
 							return outbound.DialContext(ctx, "tcp", metadata.ParseSocksaddr(addr))
 						},
 					},
diff --git a/include/configs/common/Outbound.h b/include/configs/common/Outbound.h
index bf53652..8ccdcd8 100644
--- a/include/configs/common/Outbound.h
+++ b/include/configs/common/Outbound.h
@@ -1,5 +1,6 @@
 #pragma once
 #include <QHostInfo>
+#include <utility>
 #include "DialFields.h"
 #include "multiplex.h"
 #include "TLS.h"
@@ -27,18 +28,23 @@ namespace Configs
 
         void ResolveDomainToIP(const std::function<void()> &onFinished) {
             bool noResolve = false;
-            if (IsIpAddress(server) || server.isEmpty()) noResolve = true;
+            auto serverAddr = GetAddress();
+            if (IsIpAddress(serverAddr) || serverAddr.isEmpty()) noResolve = true;
             if (noResolve) {
                 onFinished();
                 return;
             }
-            QHostInfo::lookupHost(server, QApplication::instance(), [=, this](const QHostInfo &host) {
+            QHostInfo::lookupHost(serverAddr, QApplication::instance(), [=, this](const QHostInfo &host) {
                 auto addrs = host.addresses();
-                if (!addrs.isEmpty()) server = addrs.first().toString();
+                if (!addrs.isEmpty()) SetAddress(addrs.first().toString());
                 onFinished();
             });
         }
 
+        virtual void SetAddress(QString newAddr) {
+            server = std::move(newAddr);
+        }
+
         virtual QString GetAddress()
         {
             return server;
diff --git a/include/configs/outbounds/tailscale.h b/include/configs/outbounds/tailscale.h
index fde9097..6b709fb 100644
--- a/include/configs/outbounds/tailscale.h
+++ b/include/configs/outbounds/tailscale.h
@@ -40,6 +40,8 @@ namespace Configs
         QJsonObject ExportToJson() override;
         BuildResult Build() override;
 
+        void SetAddress(QString newAddr) override;
+        QString GetAddress() override;
         QString DisplayAddress() override;
         QString DisplayType() override;
         bool IsEndpoint() override;
diff --git a/include/configs/outbounds/wireguard.h b/include/configs/outbounds/wireguard.h
index 103c1e0..6d874b1 100644
--- a/include/configs/outbounds/wireguard.h
+++ b/include/configs/outbounds/wireguard.h
@@ -83,6 +83,8 @@ namespace Configs
         QJsonObject ExportToJson() override;
         BuildResult Build() override;
 
+        void SetAddress(QString newAddr) override;
+        QString GetAddress() override;
         QString DisplayAddress() override;
         QString DisplayType() override;
         bool IsEndpoint() override;
diff --git a/src/configs/generate.cpp b/src/configs/generate.cpp
index c1eb75c..26e16b9 100644
--- a/src/configs/generate.cpp
+++ b/src/configs/generate.cpp
@@ -529,7 +529,7 @@ namespace Configs {
         ctx->buildConfigResult->coreConfig["inbounds"] = inbounds;
     }
 
-    void unwrapChain(const QList<int>& entIDs, QList<std::shared_ptr<ProxyEntity>> &ents, QString& error)
+    void entIDListtoEntList(const QList<int>& entIDs, QList<std::shared_ptr<ProxyEntity>> &ents, QString& error)
     {
         bool hasExtracore = false;
         bool hasCustom = false;
@@ -556,10 +556,24 @@ namespace Configs {
         }
     }
 
+    QList<int> unwrapChain(int entID) {
+        auto ent = profileManager->GetProfile(entID);
+        if (ent == nullptr)
+        {
+            return {};
+        }
+        if (ent->type == "chain") {
+            auto chain = ent->Chain();
+            if (chain == nullptr) return {};
+            return chain->list;
+        }
+        return {entID};
+    }
+
     void buildOutboundChain(std::shared_ptr<BuildSingBoxConfigContext> &ctx, const QList<int>& entIDs, const QString& prefix, bool includeProxy, bool link)
     {
         QList<std::shared_ptr<ProxyEntity>> ents;
-        unwrapChain(entIDs, ents, ctx->error);
+        entIDListtoEntList(entIDs, ents, ctx->error);
         for (int idx = 0; idx < ents.size(); idx++)
         {
             auto tag = prefix + "-" + Int2String(idx);
@@ -898,6 +912,7 @@ namespace Configs {
         QList<int> entIDs;
         for (const auto& proxy : profiles) entIDs << proxy->id;
         ctx->buildPrerequisities->dnsDeps->directDomains = QListStr2QJsonArray(getEntDomains(entIDs, ctx->error));
+        if (!ctx->buildPrerequisities->dnsDeps->directDomains.isEmpty()) ctx->buildPrerequisities->dnsDeps->needDirectDnsRules = true;
         buildDNSSection(ctx);
         if (!ctx->error.isEmpty())
         {
@@ -942,7 +957,11 @@ namespace Configs {
                     continue;
                 }
             }
-            buildOutboundChain(ctx, {item->id}, "proxy-" + Int2String(suffix), false, true);
+            buildOutboundChain(ctx, unwrapChain(item->id), "proxy-" + Int2String(suffix), false, true);
+            if (!ctx->error.isEmpty()) {
+                res->error = ctx->error;
+                return res;
+            }
             auto tag = "proxy-" + Int2String(suffix) + "-0";
             res->outboundTags << tag;
             res->tag2entID.insert(tag, item->id);
diff --git a/src/configs/outbounds/tailscale.cpp b/src/configs/outbounds/tailscale.cpp
index 066d103..e273911 100644
--- a/src/configs/outbounds/tailscale.cpp
+++ b/src/configs/outbounds/tailscale.cpp
@@ -114,6 +114,14 @@ namespace Configs {
         return {object, ""};
     }
 
+    void tailscale::SetAddress(QString newAddr) {
+        control_url = newAddr;
+    }
+
+    QString tailscale::GetAddress() {
+        return control_url;
+    }
+
     QString tailscale::DisplayAddress()
     {
         return control_url;
diff --git a/src/configs/outbounds/wireguard.cpp b/src/configs/outbounds/wireguard.cpp
index 28768d3..8940472 100644
--- a/src/configs/outbounds/wireguard.cpp
+++ b/src/configs/outbounds/wireguard.cpp
@@ -261,9 +261,18 @@ namespace Configs {
         return {object, ""};
     }
 
+    void wireguard::SetAddress(QString newAddr) {
+        peer->address = newAddr;
+    }
+
+    QString wireguard::GetAddress() {
+        return peer->address;
+    }
+
+
     QString wireguard::DisplayAddress()
     {
-        return ::DisplayAddress(peer->address, peer->port > 0);
+        return ::DisplayAddress(peer->address, peer->port);
     }
 
     QString wireguard::DisplayType()
diff --git a/src/dataStore/RouteEntity.cpp b/src/dataStore/RouteEntity.cpp
index 7c06345..f9c05ad 100644
--- a/src/dataStore/RouteEntity.cpp
+++ b/src/dataStore/RouteEntity.cpp
@@ -784,17 +784,15 @@ namespace Configs {
 
     bool RoutingChain::add_simple_process_rule(const QString& content, const std::shared_ptr<RouteRule>& rule, ruleType type)
     {
-        auto sp = content.split(":");
-        if (sp.size() < 2) return false;
-        const QString& subType = sp[0];
-        if (subType == "processPath" && type == simpleProcessPath)
+        if (!content.contains(":")) return false;
+        auto prefix = content.first(content.indexOf(':'));
+        const QString& address = content.section(':', 1);
+        if (prefix == "processPath" && type == simpleProcessPath)
         {
-            const QString& address = content.section(':', 1);
             if (!rule->process_path.contains(address)) rule->process_path.append(address);
             return true;
-        } else if (subType == "processName" && type == simpleProcessName && sp.size() == 2)
+        } else if (prefix == "processName" && type == simpleProcessName)
         {
-            const QString& address = sp[1];
             if (!rule->process_name.contains(address)) rule->process_name.append(address);
             return true;
         } else
diff --git a/src/ui/mainwindow.cpp b/src/ui/mainwindow.cpp
index 6417667..5dc5141 100644
--- a/src/ui/mainwindow.cpp
+++ b/src/ui/mainwindow.cpp
@@ -1789,10 +1789,18 @@ void MainWindow::on_menu_export_config_triggered() {
     msg.exec();
     if (msg.clickedButton() == button_1) {
         result = BuildSingBoxConfig(ent);
+        if (!result->error.isEmpty()) {
+            MessageBoxWarning("Build config error", result->error);
+            return;
+        }
         config_core = QJsonObject2QString(result->coreConfig, true);
         QApplication::clipboard()->setText(config_core);
     } else if (msg.clickedButton() == button_2) {
         auto res = Configs::BuildTestConfig({ent});
+        if (!res->error.isEmpty()) {
+            MessageBoxWarning("Build Test config error", res->error);
+            return;
+        }
         config_core = QJsonObject2QString(res->coreConfig, true);
         QApplication::clipboard()->setText(config_core);
     }