---

yaml
---
r: 214285
b: refs/heads/master
c: 65e9b62
h: refs/heads/master
i:
  214283: 6cb1aa6
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: bc8acf2c8c3e43fcc192762a9f964b3e9a17748b
+refs/heads/master: 65e9b62d4503849b10bedfc29bff0473760cc597

trunk/net/ipv6/ndisc.c

@@ -1105,6 +1105,18 @@ static void ndisc_ra_useropt(struct sk_buff *ra, struct nd_opt_hdr *opt)
 	rtnl_set_sk_err(net, RTNLGRP_ND_USEROPT, err);
 }
 
+static inline int accept_ra(struct inet6_dev *in6_dev)
+{
+	/*
+	 * If forwarding is enabled, RA are not accepted unless the special
+	 * hybrid mode (accept_ra=2) is enabled.
+	 */
+	if (in6_dev->cnf.forwarding && in6_dev->cnf.accept_ra < 2)
+		return 0;
+
+	return in6_dev->cnf.accept_ra;
+}
+
 static void ndisc_router_discovery(struct sk_buff *skb)
 {
 	struct ra_msg *ra_msg = (struct ra_msg *)skb_transport_header(skb);
@@ -1158,8 +1170,7 @@ static void ndisc_router_discovery(struct sk_buff *skb)
 		return;
 	}
 
-	/* skip route and link configuration on routers */
-	if (in6_dev->cnf.forwarding || !in6_dev->cnf.accept_ra)
+	if (!accept_ra(in6_dev))
 		goto skip_linkparms;
 
 #ifdef CONFIG_IPV6_NDISC_NODETYPE
@@ -1309,8 +1320,7 @@ static void ndisc_router_discovery(struct sk_buff *skb)
 			     NEIGH_UPDATE_F_ISROUTER);
 	}
 
-	/* skip route and link configuration on routers */
-	if (in6_dev->cnf.forwarding || !in6_dev->cnf.accept_ra)
+	if (!accept_ra(in6_dev))
 		goto out;
 
 #ifdef CONFIG_IPV6_ROUTE_INFO