--- avahi-core/iface-linux.c~	2016-02-09 04:12:59.295979998 -0200
+++ avahi-core/iface-linux.c	2017-04-13 11:25:52.103355254 -0300
@@ -104,8 +104,8 @@
         hw->flags_ok =
             (ifinfomsg->ifi_flags & IFF_UP) &&
             (!m->server->config.use_iff_running || (ifinfomsg->ifi_flags & IFF_RUNNING)) &&
-            !(ifinfomsg->ifi_flags & IFF_LOOPBACK) &&
-            (ifinfomsg->ifi_flags & IFF_MULTICAST) &&
+            ((ifinfomsg->ifi_flags & IFF_LOOPBACK) ||
+             (ifinfomsg->ifi_flags & IFF_MULTICAST)) &&
             (m->server->config.allow_point_to_point || !(ifinfomsg->ifi_flags & IFF_POINTOPOINT));
 
         /* Handle interface attributes */
--- avahi-core/iface-pfroute.c~	2015-04-01 01:58:14.149727123 -0300
+++ avahi-core/iface-pfroute.c	2017-04-13 11:28:47.547016465 -0300
@@ -80,8 +80,8 @@
   hw->flags_ok =
     (ifm->ifm_flags & IFF_UP) &&
     (!m->server->config.use_iff_running || (ifm->ifm_flags & IFF_RUNNING)) &&
-    !(ifm->ifm_flags & IFF_LOOPBACK) &&
-    (ifm->ifm_flags & IFF_MULTICAST) &&
+    ((ifm->ifm_flags & IFF_LOOPBACK) ||
+     (ifm->ifm_flags & IFF_MULTICAST)) &&
     (m->server->config.allow_point_to_point || !(ifm->ifm_flags & IFF_POINTOPOINT));
 
   avahi_free(hw->name);
@@ -427,8 +427,8 @@
         hw->flags_ok =
             (flags & IFF_UP) &&
             (!m->server->config.use_iff_running || (flags & IFF_RUNNING)) &&
-            !(flags & IFF_LOOPBACK) &&
-            (flags & IFF_MULTICAST) &&
+            ((flags & IFF_LOOPBACK) ||
+             (flags & IFF_MULTICAST)) &&
             (m->server->config.allow_point_to_point || !(flags & IFF_POINTOPOINT));
         hw->name = avahi_strdup(lifreq->lifr_name);
         hw->mtu = mtu;