From 98764b9ee03f84e451e1857d36dab959d03b4385 Mon Sep 17 00:00:00 2001
From: "andrey.bychkov" <andrey@signalmodelling.ru>
Date: Tue, 24 Jun 2025 18:14:23 +0300
Subject: [PATCH] fix get mtu

---
 libs/main/io_devices/piethernet.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

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;
 				}
 			}