diff --git a/core/mod_google.sh b/core/mod_google.sh
index 0170dab..1020eea 100755
--- a/core/mod_google.sh
+++ b/core/mod_google.sh
@@ -97,14 +97,21 @@ CURL_BIND_OPT=""
 DYNAMIC_IP_PREF="-${IP_PREF:-4}" # 默认提取用户配置
 
 if [[ -n "$BIND_IP" && "$BIND_IP" =~ ^[0-9a-fA-F:\.]+$ ]]; then
-    CURL_BIND_OPT="--interface $BIND_IP"
-    # 智能探测：带冒号为 V6，带点号为 V4
-    if [[ "$BIND_IP" == *":"* ]]; then
-        DYNAMIC_IP_PREF="-6"
-        log "$MODULE_NAME" "INFO " "底层路由锁定: 绑定 IPv6 出口及协议 ($BIND_IP)"
-    elif [[ "$BIND_IP" == *"."* ]]; then
-        DYNAMIC_IP_PREF="-4"
-        log "$MODULE_NAME" "INFO " "底层路由锁定: 绑定 IPv4 出口及协议 ($BIND_IP)"
+    # [v3.6.3 容错层补丁] 探测物理网卡/虚拟 IP 存活状态
+    RAW_BIND_IP=$(echo "$BIND_IP" | tr -d '[]')
+    if ! ip addr show 2>/dev/null | grep -qw "$RAW_BIND_IP"; then
+        log "$MODULE_NAME" "WARN " "检测到配置的出口 IP ($RAW_BIND_IP) 已丢失，自动降级为系统默认路由出网！"
+        CURL_BIND_OPT=""
+    else
+        CURL_BIND_OPT="--interface $BIND_IP"
+        # 智能探测：带冒号为 V6，带点号为 V4
+        if [[ "$BIND_IP" == *":"* ]]; then
+            DYNAMIC_IP_PREF="-6"
+            log "$MODULE_NAME" "INFO " "底层路由锁定: 绑定 IPv6 出口及协议 ($BIND_IP)"
+        elif [[ "$BIND_IP" == *"."* ]]; then
+            DYNAMIC_IP_PREF="-4"
+            log "$MODULE_NAME" "INFO " "底层路由锁定: 绑定 IPv4 出口及协议 ($BIND_IP)"
+        fi
     fi
 fi
 
diff --git a/core/mod_trust.sh b/core/mod_trust.sh
index c106a2a..54e24fd 100755
--- a/core/mod_trust.sh
+++ b/core/mod_trust.sh
@@ -99,14 +99,21 @@ CURL_BIND_OPT=""
 DYNAMIC_IP_PREF="-${IP_PREF:-4}" # 默认提取用户配置
 
 if [[ -n "$BIND_IP" && "$BIND_IP" =~ ^[0-9a-fA-F:\.]+$ ]]; then
-    CURL_BIND_OPT="--interface $BIND_IP"
-    # 智能探测：带冒号为 V6，带点号为 V4
-    if [[ "$BIND_IP" == *":"* ]]; then
-        DYNAMIC_IP_PREF="-6"
-        log_msg "INFO " "底层路由锁定: 绑定 IPv6 出口及协议 ($BIND_IP)"
-    elif [[ "$BIND_IP" == *"."* ]]; then
-        DYNAMIC_IP_PREF="-4"
-        log_msg "INFO " "底层路由锁定: 绑定 IPv4 出口及协议 ($BIND_IP)"
+    # [v3.6.3 容错层补丁] 探测物理网卡/虚拟 IP 存活状态
+    RAW_BIND_IP=$(echo "$BIND_IP" | tr -d '[]')
+    if ! ip addr show 2>/dev/null | grep -qw "$RAW_BIND_IP"; then
+        log_msg "WARN " "检测到配置的出口 IP ($RAW_BIND_IP) 已丢失，自动降级为系统默认路由出网！"
+        CURL_BIND_OPT=""
+    else
+        CURL_BIND_OPT="--interface $BIND_IP"
+        # 智能探测：带冒号为 V6，带点号为 V4
+        if [[ "$BIND_IP" == *":"* ]]; then
+            DYNAMIC_IP_PREF="-6"
+            log_msg "INFO " "底层路由锁定: 绑定 IPv6 出口及协议 ($BIND_IP)"
+        elif [[ "$BIND_IP" == *"."* ]]; then
+            DYNAMIC_IP_PREF="-4"
+            log_msg "INFO " "底层路由锁定: 绑定 IPv4 出口及协议 ($BIND_IP)"
+        fi
     fi
 fi
 
diff --git a/core/tg_report.sh b/core/tg_report.sh
index c3538f0..9a06802 100755
--- a/core/tg_report.sh
+++ b/core/tg_report.sh
@@ -31,11 +31,17 @@ CURL_BIND_OPT=""
 DYNAMIC_IP_PREF="-${IP_PREF:-4}"
 
 if [[ -n "$BIND_IP" && "$BIND_IP" =~ ^[0-9a-fA-F:\.]+$ ]]; then
-    CURL_BIND_OPT="--interface $BIND_IP"
-    if [[ "$BIND_IP" == *":"* ]]; then
-        DYNAMIC_IP_PREF="-6"
-    elif [[ "$BIND_IP" == *"."* ]]; then
-        DYNAMIC_IP_PREF="-4"
+    # [v3.6.3 容错层补丁] 探测物理网卡/虚拟 IP 存活状态
+    RAW_BIND_IP=$(echo "$BIND_IP" | tr -d '[]')
+    if ! ip addr show 2>/dev/null | grep -qw "$RAW_BIND_IP"; then
+        CURL_BIND_OPT=""
+    else
+        CURL_BIND_OPT="--interface $BIND_IP"
+        if [[ "$BIND_IP" == *":"* ]]; then
+            DYNAMIC_IP_PREF="-6"
+        elif [[ "$BIND_IP" == *"."* ]]; then
+            DYNAMIC_IP_PREF="-4"
+        fi
     fi
 fi
 
diff --git a/core/updater.sh b/core/updater.sh
index 25a3816..77a3260 100755
--- a/core/updater.sh
+++ b/core/updater.sh
@@ -42,7 +42,12 @@ CURL_CMD="curl -${IP_PREF:-4} -sL"
 if [ -n "$BIND_IP" ]; then
     # curl 的 --interface 参数不支持带方括号的 IPv6 地址，必须强行脱壳
     RAW_BIND_IP=$(echo "$BIND_IP" | tr -d '[]')
-    CURL_CMD="$CURL_CMD --interface $RAW_BIND_IP"
+    # [v3.6.3 容错层补丁] 探测网卡存活状态，防止 IP 漂移导致永久断网
+    if ! ip addr show 2>/dev/null | grep -qw "$RAW_BIND_IP"; then
+        log "Updater" "WARN " "检测到绑定的出口 IP ($RAW_BIND_IP) 已丢失，自动退回默认路由！"
+    else
+        CURL_CMD="$CURL_CMD --interface $RAW_BIND_IP"
+    fi
 fi
 
 # ==========================================================