From 1fbf43bbd92a7ac7c07de6253f7a2efcc9a93c47 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 28 Jun 2010 22:02:20 +0200
Subject: [PATCH] iface: check for IFA_F_DEPRECATED

http://avahi.org/ticket/211
---
 avahi-core/iface-linux.c |  1 +
 avahi-core/iface.c       | 26 ++++++++++++--------------
 avahi-core/iface.h       |  1 +
 3 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/avahi-core/iface-linux.c b/avahi-core/iface-linux.c
index 2782697..a1b7f73 100644
--- a/avahi-core/iface-linux.c
+++ b/avahi-core/iface-linux.c
@@ -238,6 +238,7 @@ static void netlink_callback(AvahiNetlink *nl, struct nlmsghdr *n, void* userdat
 
             /* Update the scope field for the address */
             addr->global_scope = ifaddrmsg->ifa_scope == RT_SCOPE_UNIVERSE || ifaddrmsg->ifa_scope == RT_SCOPE_SITE;
+            addr->deprecated = !!(ifaddrmsg->ifa_flags & IFA_F_DEPRECATED);
         } else {
             AvahiInterfaceAddress *addr;
             assert(n->nlmsg_type == RTM_DELADDR);
diff --git a/avahi-core/iface.c b/avahi-core/iface.c
index 0736df4..095580c 100644
--- a/avahi-core/iface.c
+++ b/avahi-core/iface.c
@@ -91,7 +91,7 @@ void avahi_interface_address_update_rrs(AvahiInterfaceAddress *a, int remove_rrs
             avahi_address_snprint(t, sizeof(t), &a->address);
 
             if (avahi_s_entry_group_get_state(a->entry_group) == AVAHI_ENTRY_GROUP_REGISTERING &&
-		m->server->state == AVAHI_SERVER_REGISTERING)
+                m->server->state == AVAHI_SERVER_REGISTERING)
                 avahi_server_decrease_host_rr_pending(m->server);
 
             avahi_log_info("Withdrawing address record for %s on %s.", t, a->interface->hardware->name);
@@ -413,6 +413,7 @@ AvahiInterfaceAddress *avahi_interface_address_new(AvahiInterfaceMonitor *m, Ava
     a->address = *addr;
     a->prefix_len = prefix_len;
     a->global_scope = 0;
+    a->deprecated = 0;
     a->entry_group = NULL;
 
     AVAHI_LLIST_PREPEND(AvahiInterfaceAddress, address, i->addresses, a);
@@ -670,24 +671,21 @@ int avahi_interface_address_is_relevant(AvahiInterfaceAddress *a) {
     AvahiInterfaceAddress *b;
     assert(a);
 
-    /* Publish public IP addresses */
-    if (a->global_scope)
+    /* Publish public and non-deprecated IP addresses */
+    if (a->global_scope && !a->deprecated)
         return 1;
-    else {
-
-        /* Publish link local IP addresses if they are the only ones on the link */
-        for (b = a->interface->addresses; b; b = b->address_next) {
-            if (b == a)
-                continue;
 
-            if (b->global_scope)
-                return 0;
-        }
+    /* Publish link-local and deprecated IP addresses only if they are
+     * the only ones on the link */
+    for (b = a->interface->addresses; b; b = b->address_next) {
+        if (b == a)
+            continue;
 
-        return 1;
+        if (b->global_scope && !b->deprecated)
+            return 0;
     }
 
-    return 0;
+    return 1;
 }
 
 int avahi_interface_match(AvahiInterface *i, AvahiIfIndex idx, AvahiProtocol protocol) {
diff --git a/avahi-core/iface.h b/avahi-core/iface.h
index 466c16a..b38578c 100644
--- a/avahi-core/iface.h
+++ b/avahi-core/iface.h
@@ -123,6 +123,7 @@ struct AvahiInterfaceAddress {
     unsigned prefix_len;
 
     int global_scope;
+    int deprecated;
 
     AvahiSEntryGroup *entry_group;
 };
-- 
2.39.5