diff --git a/include/cutils/sockets.h b/include/cutils/sockets.h
index a93c8ea..b9c22c1 100644
--- a/include/cutils/sockets.h
+++ b/include/cutils/sockets.h
@@ -89,6 +89,7 @@
 int socket_network_client_timeout(const char* host, int port, int type,
                                   int timeout, int* getaddrinfo_error);
 int socket_loopback_server(int port, int type);
+int socket_loopback_server6(int port, int type);
 int socket_local_server(const char* name, int namespaceId, int type);
 int socket_local_server_bind(int s, const char* name, int namespaceId);
 int socket_local_client_connect(int fd, const char *name, int namespaceId,