From: Konrad Bucheli <kb@open.ch>
Date: Fri, 6 Dec 2019 09:06:38 +0000 (+0100)
Subject: fix segmentation fault if there is no IP address on an interface (fixes #320)
X-Git-Tag: v0.94~18^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F325%2Fhead;p=thirdparty%2Fmtr.git

fix segmentation fault if there is no IP address on an interface (fixes #320)
---

diff --git a/ui/net.c b/ui/net.c
index 6e4942e..d589d2e 100644
--- a/ui/net.c
+++ b/ui/net.c
@@ -629,7 +629,7 @@ static void net_find_interface_address_from_name(
 
     interface = ifaddrs;
     while (interface != NULL) {
-        if (!strcmp(interface->ifa_name, interface_name)) {
+        if (interface->ifa_addr != NULL && !strcmp(interface->ifa_name, interface_name)) {
             found_interface_name = 1;
 
             if (interface->ifa_addr->sa_family == address_family) {