From 6354cbf9d6b1f16544c69d8a9d2b7816768da11b Mon Sep 17 00:00:00 2001
From: Dan Fandrich <dan@coneharvesters.com>
Date: Fri, 7 Nov 2008 18:33:20 +0000
Subject: The getifaddrs() version of Curl_if2ip() crashed when used on a Linux
 system with a TEQL load-balancing device configured, which doesn't have an
 address.  Thanks to Adam Sampson for spotting this (bug #2234923).

---
 lib/if2ip.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'lib/if2ip.c')

diff --git a/lib/if2ip.c b/lib/if2ip.c
index 9faa3b67a..c591a957a 100644
--- a/lib/if2ip.c
+++ b/lib/if2ip.c
@@ -78,7 +78,8 @@ char *Curl_if2ip(int af, const char *interface, char *buf, int buf_size)
 
   if (getifaddrs(&head) >= 0) {
     for (iface=head; iface != NULL; iface=iface->ifa_next) {
-      if ((iface->ifa_addr->sa_family == af) &&
+      if ((iface->ifa_addr != NULL) &&
+          (iface->ifa_addr->sa_family == af) &&
           curl_strequal(iface->ifa_name, interface)) {
         void *addr;
         char scope[12]="";
-- 
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