diff --git a/src/config.cpp b/src/config.cpp
index 0fcc4bf..fa36478 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -487,6 +487,17 @@ void Config::expand()
         ifaces.emplace_back(SockAddr::any(AF_INET));
     }
 
+    auto& ifmap = IfaceMap::instance();
+
+    for(auto& ep : ifaces) {
+        if(!ep.addr.isMCast()) {}
+        else if(!ep.iface.empty()) {
+            ifaces.emplace_back(ifmap.address_of(ep.iface));
+        } else {
+            ifaces.emplace_back(SockAddr::any(ep.addr.family()));
+        }
+    }
+
     if(auto_beacon) {
         // use interface list add ipv4 broadcast addresses to beaconDestinations.
         // 0.0.0.0 -> adds all bcasts
diff --git a/src/server.cpp b/src/server.cpp
index bfaec86..4352b8a 100644
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -433,6 +433,10 @@ Server::Pvt::Pvt(const Config &conf)
 #endif
     }
 
+    if(tcpifaces.empty()) {
+        log_err_printf(serversetup, "Server Unreachable.  Interface address list includes not TCP interfaces.%s", "\n");
+    }
+
     for(const auto& addr : effective.ignoreAddrs) {
         SockAddr temp(addr.c_str());
         ignoreList.push_back(temp);
diff --git a/src/serverconn.cpp b/src/serverconn.cpp
index 9ff6fb3..6820d39 100644
--- a/src/serverconn.cpp
+++ b/src/serverconn.cpp
@@ -386,11 +386,14 @@ ServIface::ServIface(const SockAddr &addr, server::Server::Pvt *server, bool fal
     server->acceptor_loop.assertInLoop();
     auto orig_port = bind_addr.port();
 
+#ifdef __linux__
     if(server->canIPv6 && bind_addr.family()==AF_INET && bind_addr.isAny()) {
-        // promote to IPv6 with IPv4 support
+        // Linux IP stack disallows binding both 0.0.0.0 and [::] for the same port.
+        // so promote to IPv6 when possible
         bind_addr = SockAddr::any(AF_INET6, bind_addr.port());
         log_debug_printf(connsetup, "Promote 0.0.0.0 -> [::]%s", "\n");
     }
+#endif
 
     sock = evsocket(bind_addr.family(), SOCK_STREAM, 0);