diff --git a/src/io/piethernet.cpp b/src/io/piethernet.cpp
index 0861e913..635748bf 100755
--- a/src/io/piethernet.cpp
+++ b/src/io/piethernet.cpp
@@ -28,6 +28,8 @@
 #  else
 #    include <sys/dcmd_io-net.h>
 #  endif
+#  define ip_mreqn ip_mreq
+#  define imr_address imr_interface
 #endif
 #ifdef WINDOWS
 #  include <io.h>
@@ -341,13 +343,7 @@ bool PIEthernet::joinMulticastGroup(const PIString & group) {
 	if (!params[Broadcast])
 		;//piCoutObj << "Warning: \"Broadcast\" parameter not set, \"joinMulticastGroup(\"" << group << "\")\" may be useless!";
 	parseAddress(path(), &ip_, &port_);
-	struct
-#ifndef QNX
-		ip_mreqn
-#else
-		ip_mreq
-#endif
-				mreq;
+	struct ip_mreqn mreq;
 	memset(&mreq, 0, sizeof(mreq));
 #ifdef LINUX
 	//mreq.imr_address.s_addr = INADDR_ANY;
@@ -355,16 +351,8 @@ bool PIEthernet::joinMulticastGroup(const PIString & group) {
 	const PIEthernet::Interface * ci = il.getByAddress(ip_);
 	if (ci != 0) mreq.imr_ifindex = ci->index;*/
 #endif
-	in_addr_t addr;
-	if (params[PIEthernet::Broadcast]) addr = INADDR_ANY;
-	else addr = inet_addr(ip_.dataAscii());
-	mreq.
-#ifndef QNX
-		imr_address
-#else
-		imr_interface
-#endif
-					.s_addr = addr;
+	if (params[PIEthernet::Broadcast]) mreq.imr_address.s_addr = INADDR_ANY;
+	else mreq.imr_address.s_addr = inet_addr(ip_.dataAscii());
 /*#ifndef WINDOWS
 	PIEthernet::InterfaceList il = interfaces();
 	const PIEthernet::Interface * ci = il.getByAddress(ip_);
@@ -407,24 +395,10 @@ bool PIEthernet::leaveMulticastGroup(const PIString & group) {
 	PIFlags<Parameters> params = parameters();
 	/// TODO windows
 	parseAddress(path(), &ip_, &port_);
-	struct
-#ifndef QNX
-		ip_mreqn
-#else
-		ip_mreq
-#endif
-				mreq;
+	struct ip_mreqn mreq;
 	memset(&mreq, 0, sizeof(mreq));
-	in_addr_t addr;
-	if (params[PIEthernet::Broadcast]) addr = INADDR_ANY;
-	else addr = inet_addr(ip_.dataAscii());
-	mreq.
-#ifndef QNX
-		imr_address
-#else
-		imr_interface
-#endif
-					.s_addr = addr;
+	if (params[PIEthernet::Broadcast]) mreq.imr_address.s_addr = INADDR_ANY;
+	else mreq.imr_address.s_addr = inet_addr(ip_.dataAscii());
 	mreq.imr_multiaddr.s_addr = inet_addr(group.dataAscii());
 	if (ethSetsockopt(sock, IPPROTO_IP, IP_DROP_MEMBERSHIP, &mreq, sizeof(mreq)) == -1) {
 		piCoutObj << "Can`t leave multicast group " << group << ", " << ethErrorString();