1 files changed, 9 insertions, 2 deletions

diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index 16560336eb72..9ef1831746ef 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -33,6 +33,11 @@
 #include <linux/errqueue.h>
 #include <asm/uaccess.h>
 
+static inline int ipv6_mapped_addr_any(const struct in6_addr *a)
+{
+        return (ipv6_addr_v4mapped(a) && (a->s6_addr32[3] == 0));
+}
+
 int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 {
         struct sockaddr_in6     *usin = (struct sockaddr_in6 *) uaddr;
@@ -102,10 +107,12 @@ ipv4_connected:
 
                 ipv6_addr_set_v4mapped(inet->inet_daddr, &np->daddr);
 
-                if (ipv6_addr_any(&np->saddr))
+                if (ipv6_addr_any(&np->saddr) ||
+                    ipv6_mapped_addr_any(&np->saddr))
                         ipv6_addr_set_v4mapped(inet->inet_saddr, &np->saddr);
 
-                if (ipv6_addr_any(&np->rcv_saddr)) {
+                if (ipv6_addr_any(&np->rcv_saddr) ||
+                    ipv6_mapped_addr_any(&np->rcv_saddr)) {
                         ipv6_addr_set_v4mapped(inet->inet_rcv_saddr,
                                                &np->rcv_saddr);
                         if (sk->sk_prot->rehash)