From 43ae8c395fea5d7c2e85146b30ac87a1450d97a3 Mon Sep 17 00:00:00 2001
From: Pavel Tvrdik <pawel.tvrdik@gmail.com>
Date: Tue, 5 Apr 2016 09:12:59 +0200
Subject: [PATCH] Socktest: check existence of given name of interface

---
 socktest/common.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/socktest/common.c b/socktest/common.c
index 8c5995e4..df00388c 100644
--- a/socktest/common.c
+++ b/socktest/common.c
@@ -102,6 +102,11 @@ skt_parse_args(int argc, char *argv[], int is_send)
     case 'i':
       s->iface = if_get_by_name(optarg);
       s->iface->index = if_nametoindex(optarg);
+      if (s->iface->index == 0)
+      {
+	printf("No interface exists with the name %s \n", optarg);
+	exit(1);
+      }
       break;
     case 'B':
       cf_bind = 1;