diff --git a/libs/main/io_devices/piethernet.cpp b/libs/main/io_devices/piethernet.cpp
index 69cc2f30..89634d5f 100644
--- a/libs/main/io_devices/piethernet.cpp
+++ b/libs/main/io_devices/piethernet.cpp
@@ -1243,9 +1243,12 @@ PIEthernet::InterfaceList PIEthernet::interfaces() {
 #		else
 			if (s != -1) {
 				struct ifreq ir;
-				strcpy(ir.ifr_name, cif->ifa_name);
+				memset(&ir, 0, sizeof(ir));
+				strncpy(ir.ifr_name, cif->ifa_name, sizeof(ir.ifr_name));
 				if (ioctl(s, SIOCGIFHWADDR, &ir) == 0) {
 					ci.mac = macFromBytes(PIByteArray(ir.ifr_hwaddr.sa_data, 6));
+				}
+				if (ioctl(s, SIOCGIFMTU, &ir) == 0) {
 					ci.mtu = ir.ifr_mtu;
 				}
 			}