1 files changed, 51 insertions, 0 deletions
diff --git a/network/avahi/ipv6_race_condition_fix.patch b/network/avahi/ipv6_race_condition_fix.patch
new file mode 100644
index 0000000000..3418b1a11c
--- /dev/null
+++ b/network/avahi/ipv6_race_condition_fix.patch
@@ -0,0 +1,51 @@
+Submitted By:            Douglas R. Reno <renodr at linuxfromscratch dot org>
+Date:                    2020-10-19
+Initial Package Version: 0.8
+Upstream Status:         PR, not applied
+Origin:                  Upstream PR (github.com/lathiat/avahi/pull/309)
+Description:             Fixes a race condition when multiple NICs are in use
+                         when IPv6 is enabled. This will exhibit behavior where
+                         messages about withdrawing address records, registering
+                         access records, and new hostname announcements are
+                         spammed to the log every second.
+
+diff -Naurp avahi-0.8.orig/avahi-core/server.c avahi-0.8/avahi-core/server.c
+--- avahi-0.8.orig/avahi-core/server.c	2020-02-16 21:41:24.939967558 -0600
++++ avahi-0.8/avahi-core/server.c	2020-10-19 11:07:22.054861721 -0500
+@@ -193,7 +193,7 @@ static void withdraw_rrset(AvahiServer *
+         withdraw_entry(s, e);
+ }
+ 
+-static void incoming_probe(AvahiServer *s, AvahiRecord *record, AvahiInterface *i) {
++static void incoming_probe(AvahiServer *s, AvahiRecord *record, AvahiInterface *i, int from_local_iface) {
+     AvahiEntry *e, *n;
+     int ours = 0, won = 0, lost = 0;
+ 
+@@ -210,7 +210,7 @@ static void incoming_probe(AvahiServer *
+         if (e->dead)
+             continue;
+ 
+-        if ((cmp = avahi_record_lexicographical_compare(e->record, record)) == 0) {
++        if ((cmp = avahi_record_lexicographical_compare(e->record, record)) == 0 || from_local_iface) {
+             ours = 1;
+             break;
+         } else {
+@@ -639,7 +639,7 @@ static void handle_query_packet(AvahiSer
+             if (!avahi_key_is_pattern(record->key)) {
+                 if (!from_local_iface)
+                     reflect_probe(s, i, record);
+-                incoming_probe(s, record, i);
++                incoming_probe(s, record, i, from_local_iface);
+             }
+ 
+             avahi_record_unref(record);
+@@ -961,8 +961,7 @@ static void dispatch_packet(AvahiServer
+         return;
+ 
+     /* We don't want to reflect local traffic, so we check if this packet is generated locally. */
+-    if (s->config.enable_reflector)
+-        from_local_iface = originates_from_local_iface(s, iface, src_address, port);
++    from_local_iface = originates_from_local_iface(s, iface, src_address, port);
+ 
+     if (avahi_dns_packet_check_valid_multicast(p) < 0) {
+         avahi_log_debug("Received invalid packet.");