diff --git a/.clang-format b/.clang-format
index e4973ea7..5c14ee53 100644
--- a/.clang-format
+++ b/.clang-format
@@ -199,7 +199,7 @@ SpacesInParentheses: false
 SpacesInSquareBrackets: false
 SpaceBeforeSquareBrackets: false
 BitFieldColonSpacing: After
-Standard:        c++11
+Standard:        c++17
 StatementAttributeLikeMacros:
   - Q_EMIT
   - PIMETA
diff --git a/libs/main/io_devices/piethernet.cpp b/libs/main/io_devices/piethernet.cpp
index 9f535284..b9d02763 100644
--- a/libs/main/io_devices/piethernet.cpp
+++ b/libs/main/io_devices/piethernet.cpp
@@ -206,10 +206,10 @@ void PIEthernet::construct() {
 #  endif
 #  ifdef PIP_EMBEDDED
 	setThreadedReadBufferSize(1_KiB);
-#  else // PIP_EMBEDDED
+#  else  // PIP_EMBEDDED
 	setThreadedReadBufferSize(64_KiB);
 #  endif // PIP_EMBEDDED
-	// setPriority(piHigh);
+		 // setPriority(piHigh);
 }
 
 
@@ -392,7 +392,7 @@ void PIEthernet::applyBuffers() {
 
 void PIEthernet::applyTimeout(int fd, int opt, PISystemTime tm) {
 	if (fd == 0) return;
-		// piCoutObj << "setReadIsBlocking" << yes;
+	// piCoutObj << "setReadIsBlocking" << yes;
 #  ifdef WINDOWS
 	DWORD _tm = tm.toMilliseconds();
 #  else
@@ -597,6 +597,7 @@ void PIEthernet::stopThreadedListen() {
 #  endif
 	PRIVATE->event.destroy();
 	closeSockets();
+	opened_ = server_bounded = false;
 }