mdns: always use interface addresses

We don't want to use the transformed/munged host addresses for local
announcements. Ideally, we'd take a more scientific approach to this (i.e.,
"host, please give me addresses relative to X") but we can't do that yet.

p2p/discovery/mdns.go

@@ -49,7 +49,7 @@ type mdnsService struct {
 
 func getDialableListenAddrs(ph host.Host) ([]*net.TCPAddr, error) {
 	var out []*net.TCPAddr
-	for _, addr := range ph.Addrs() {
+	for _, addr := range ph.Network().InterfaceListenAddresses() {
 		na, err := manet.ToNetAddr(addr)
 		if err != nil {
 			continue