From 8385ef50a644b755beead92af8805a6f6d7e4d78 Mon Sep 17 00:00:00 2001
From: Mark Pizzolato <mark@infocomm.com>
Date: Wed, 10 Oct 2018 08:30:00 -0700
Subject: [PATCH] ETHER: Only convert attach argument to lower case when it
 contains a ':'

---
 sim_ether.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/sim_ether.c b/sim_ether.c
index 6bc61315..3792abf7 100644
--- a/sim_ether.c
+++ b/sim_ether.c
@@ -2274,9 +2274,11 @@ else {
 
 namebuf[sizeof(namebuf)-1] = '\0';
 strlcpy (namebuf, savname, sizeof(namebuf));
-for (num = 0; (namebuf[num] != ':') && (namebuf[num] != '\0'); num++)
-    if (isupper (namebuf[num]))
-        namebuf[num] = tolower (namebuf[num]);
+if (strchr (namebuf, ':')) {
+    for (num = 0; (namebuf[num] != ':') && (namebuf[num] != '\0'); num++)
+        if (isupper (namebuf[num]))
+            namebuf[num] = tolower (namebuf[num]);
+    }
 savname = namebuf;
 r = _eth_open_port(namebuf, &dev->eth_api, &dev->handle, &dev->fd_handle, errbuf, NULL, (void *)dev, dptr, dbit);