From 7fe9434528f843293da5f18bc8829ff682a56d7d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ryo=20Kogul=C3=A9?= <kogule@github.com>
Date: Sun, 22 Mar 2020 09:19:25 -0700
Subject: [PATCH] ETHER: Fix tap support on OS/X

As reported in #823
---
 sim_ether.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sim_ether.c b/sim_ether.c
index 75a70db6..58adb234 100644
--- a/sim_ether.c
+++ b/sim_ether.c
@@ -2070,13 +2070,14 @@ if (0 == strncmp("tap:", savname, 4)) {
         }
       else {
         *fd_handle = (SOCKET)tun;
-        strcpy(savname, devname);
+        memmove(savname, devname, strlen(devname) + 1);
         }
 #if defined (__APPLE__)
-      if (tun < 0) {    /* Not good yet? */
+      if (tun >= 0) {       /* Good so far? */
         struct ifreq ifr;
         int s;
 
+        /* Now make sure the interface is up */
         memset (&ifr, 0, sizeof(ifr));
         ifr.ifr_addr.sa_family = AF_INET;
         strlcpy(ifr.ifr_name, savname, sizeof(ifr.ifr_name));