Treat DNS a special case among special addresses in slirp (Jason Wessel).

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4267 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 4 insertions, 3 deletions

diff --git a/udp.c b/udp.c
index 81cc24c..e2dcbe1 100644
--- a/udp.c
+++ b/udp.c
@@ -317,11 +317,12 @@ int udp_output(struct socket *so, struct mbuf *m, struct sockaddr_in *addr)
     struct sockaddr_in saddr, daddr;
 
     saddr = *addr;
-    if ((so->so_faddr.s_addr & htonl(0xffffff00)) == special_addr.s_addr &&
-        addr->sin_addr.s_addr == htonl(0x7f000001)) {
-        saddr.sin_addr.s_addr = so->so_faddr.s_addr;
+    if ((so->so_faddr.s_addr & htonl(0xffffff00)) == special_addr.s_addr) {
         if ((so->so_faddr.s_addr & htonl(0x000000ff)) == htonl(0xff))
             saddr.sin_addr.s_addr = alias_addr.s_addr;
+        else if (addr->sin_addr.s_addr == loopback_addr.s_addr ||
+                 ((so->so_faddr.s_addr & htonl(CTL_DNS)) == htonl(CTL_DNS)))
+            saddr.sin_addr.s_addr = so->so_faddr.s_addr;
     }
     daddr.sin_addr = so->so_laddr;
     daddr.sin_port = so->so_lport;