---

yaml
---
r: 89806
b: refs/heads/master
c: 99cd07a
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5fe47b8a65f8b4104e41dc46092dfcf942ce0758
+refs/heads/master: 99cd07a537bf4c7c954f31611e30064407104410

trunk/include/net/ipv6.h

@@ -383,6 +383,16 @@ static inline int ipv6_addr_v4mapped(const struct in6_addr *a)
 		 a->s6_addr32[2] == htonl(0x0000ffff));
 }
 
+/*
+ * Check for a RFC 4843 ORCHID address
+ * (Overlay Routable Cryptographic Hash Identifiers)
+ */
+static inline int ipv6_addr_orchid(const struct in6_addr *a)
+{
+	return ((a->s6_addr32[0] & htonl(0xfffffff0))
+		== htonl(0x20010010));
+}
+
 /*
  * find the first different bit between two addresses
  * length of address must be a multiple of 32bits

trunk/net/ipv6/addrconf.c

@@ -1125,6 +1125,11 @@ int ipv6_dev_get_saddr(struct net_device *daddr_dev,
 			if (hiscore.rule < 7)
 				hiscore.rule++;
 #endif
+
+			/* Skip rule 8 for orchid -> non-orchid address pairs. */
+			if (ipv6_addr_orchid(&ifa->addr) && !ipv6_addr_orchid(daddr))
+				continue;
+
 			/* Rule 8: Use longest matching prefix */
 			if (hiscore.rule < 8) {
 				hiscore.matchlen = ipv6_addr_diff(&ifa_result->addr, daddr);