diff --git a/src/rtmp_manager.cpp b/src/rtmp_manager.cpp
index ebd7841..12f4ebf 100644
--- a/src/rtmp_manager.cpp
+++ b/src/rtmp_manager.cpp
@@ -20,7 +20,7 @@ static bool device_exists(const std::string& path)
 }
 
 // 获取指定网卡 IPv4
-static std::string get_ip_address(const std::string& ifname)
+std::string get_ip_address(const std::string& ifname)
 {
     struct ifaddrs* ifaddr = nullptr;
     if (getifaddrs(&ifaddr) != 0) return "";