3 files changed, 20 insertions, 6 deletions

diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index bd187daffdb9..c8aacbd2e333 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -126,6 +126,7 @@ struct pneigh_entry
 {
         struct pneigh_entry     *next;
         struct net_device               *dev;
+        u8                      flags;
         u8                      key[0];
 };
 
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index a45bd2124d6b..b6c69e1463e8 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1544,9 +1544,14 @@ int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
                 lladdr = tb[NDA_LLADDR] ? nla_data(tb[NDA_LLADDR]) : NULL;
 
                 if (ndm->ndm_flags & NTF_PROXY) {
-                        err = 0;
-                        if (pneigh_lookup(tbl, dst, dev, 1) == NULL)
-                                err = -ENOBUFS;
+                        struct pneigh_entry *pn;
+
+                        err = -ENOBUFS;
+                        pn = pneigh_lookup(tbl, dst, dev, 1);
+                        if (pn) {
+                                pn->flags = ndm->ndm_flags;
+                                err = 0;
+                        }
                         goto out_dev_put;
                 }
 
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 0e0d6ce69021..ddf038636f01 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -736,8 +736,10 @@ static void ndisc_recv_ns(struct sk_buff *skb)
         struct inet6_ifaddr *ifp;
         struct inet6_dev *idev = NULL;
         struct neighbour *neigh;
+        struct pneigh_entry *pneigh = NULL;
         int dad = ipv6_addr_any(saddr);
         int inc;
+        int is_router;
 
         if (ipv6_addr_is_multicast(&msg->target)) {
                 ND_PRINTK2(KERN_WARNING 
@@ -822,7 +824,8 @@ static void ndisc_recv_ns(struct sk_buff *skb)
 
                 if (ipv6_chk_acast_addr(dev, &msg->target) ||
                     (idev->cnf.forwarding && 
-                     pneigh_lookup(&nd_tbl, &msg->target, dev, 0))) {
+                     (pneigh = pneigh_lookup(&nd_tbl,
+                                             &msg->target, dev, 0)) != NULL)) {
                         if (!(NEIGH_CB(skb)->flags & LOCALLY_ENQUEUED) &&
                             skb->pkt_type != PACKET_HOST &&
                             inc != 0 &&
@@ -843,12 +846,17 @@ static void ndisc_recv_ns(struct sk_buff *skb)
                         goto out;
         }
 
+        if (pneigh)
+                is_router = pneigh->flags & NTF_ROUTER;
+        else
+                is_router = idev->cnf.forwarding;
+
         if (dad) {
                 struct in6_addr maddr;
 
                 ipv6_addr_all_nodes(&maddr);
                 ndisc_send_na(dev, NULL, &maddr, &msg->target,
-                              idev->cnf.forwarding, 0, (ifp != NULL), 1);
+                              is_router, 0, (ifp != NULL), 1);
                 goto out;
         }
 
@@ -869,7 +877,7 @@ static void ndisc_recv_ns(struct sk_buff *skb)
                              NEIGH_UPDATE_F_OVERRIDE);
         if (neigh || !dev->hard_header) {
                 ndisc_send_na(dev, neigh, saddr, &msg->target,
-                              idev->cnf.forwarding, 
+                              is_router,
                               1, (ifp != NULL && inc), inc);
                 if (neigh)
                         neigh_release(neigh);