Don't pass uninitialized bytes to ioctl().

[tinc] / src / linux / device.c

diff --git a/src/linux/device.c b/src/linux/device.c
index 3b384d4..5f925ce 100644 (file)
--- a/src/linux/device.c
+++ b/src/linux/device.c
@@ -106,7 +106,7 @@ static bool setup_device(void) {
        logger(DEBUG_ALWAYS, LOG_INFO, "%s is a %s", device, device_info);
 
        if(ifr.ifr_flags & IFF_TAP) {
-               struct ifreq ifr_mac;
+               struct ifreq ifr_mac = {};
                if(!ioctl(device_fd, SIOCGIFHWADDR, &ifr_mac))
                        memcpy(mymac.x, ifr_mac.ifr_hwaddr.sa_data, ETH_ALEN);
                else