Fix slirp redirection on systems without a useful host IP address.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1837 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 10 insertions, 9 deletions

diff --git a/misc.c b/misc.c
index 0fc53d3..3f467ab 100644
--- a/misc.c
+++ b/misc.c
@@ -85,15 +85,16 @@ struct in_addr *ia;
 void getouraddr()
 {
     char buff[256];
-    struct hostent *he;
-
-    if (gethostname(buff, 256) < 0)
-        return;
-
-    if ((he = gethostbyname(buff)) == NULL)
-        return;
-
-    our_addr = *(struct in_addr *)he->h_addr;
+    struct hostent *he = NULL;
+
+    if (gethostname(buff, 256) == 0)
+        he = gethostbyname(buff);
+    if (he)
+        our_addr = *(struct in_addr *)he->h_addr;
+    /* If the host doesn't have a useful IP address then use the
+       guest side address.  */
+    if (our_addr.s_addr == 0 || our_addr.s_addr == loopback_addr.s_addr)
+        our_addr.s_addr = special_addr.s_addr | htonl(CTL_ALIAS);
 }
 
 #if SIZEOF_CHAR_P == 8