client.go | 16 ++++++++++++++--
 config.go |  1 +

diff --git a/client.go b/client.go
index 198c04b9d779e80fac365c669210c3430839e071..17a3d87262009b58703f7d36e25033933551e3d8 100644
--- a/client.go
+++ b/client.go
@@ -499,7 +499,13 @@ 		return cfg.ListenAddr
 	}
 	if !cl.config.DisableTCP {
 		var l net.Listener
-		l, err = net.Listen("tcp", listenAddr())
+		l, err = net.Listen(func() string {
+			if cl.config.DisableIPv6 {
+				return "tcp4"
+			} else {
+				return "tcp"
+			}
+		}(), listenAddr())
 		if err != nil {
 			return
 		}
@@ -507,7 +513,13 @@ 		cl.listeners = append(cl.listeners, l)
 		go cl.acceptConnections(l, false)
 	}
 	if !cl.config.DisableUTP {
-		cl.utpSock, err = utp.NewSocket(listenAddr())
+		cl.utpSock, err = utp.NewSocket(func() string {
+			if cl.config.DisableIPv6 {
+				return "udp4"
+			} else {
+				return "udp"
+			}
+		}(), listenAddr())
 		if err != nil {
 			return
 		}
diff --git a/config.go b/config.go
index e7de8d882b91ecdaf4084d0ab4ff9ae8c7eba7b2..4bc12896f60299648310a991957ae91473b99de2 100644
--- a/config.go
+++ b/config.go
@@ -46,4 +46,5 @@ 	TorrentDataOpener
 	DisableEncryption bool `long:"disable-encryption"`
 
 	IPBlocklist *iplist.IPList
+	DisableIPv6 bool
 }