diff --git a/server/RouteController.cpp b/server/RouteController.cpp
index 56e3c28..cd5300d 100644
--- a/server/RouteController.cpp
+++ b/server/RouteController.cpp
@@ -200,7 +200,7 @@
         nlmsgerr err;
     } response;
 
-    int sock = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
+    int sock = socket(AF_NETLINK, SOCK_DGRAM | SOCK_CLOEXEC, NETLINK_ROUTE);
     if (sock != -1 &&
             connect(sock, reinterpret_cast<const sockaddr*>(&NETLINK_ADDRESS),
                     sizeof(NETLINK_ADDRESS)) != -1 &&