client.go | 3 +++

diff --git a/client.go b/client.go
index 8985e1a02f3632cdc792a038b8f960ae527405e4..a0800d58d4a5da0a26890aba71a1682f6911bd71 100644
--- a/client.go
+++ b/client.go
@@ -502,6 +502,9 @@ 	}
 	if cfg.DisableTCP && c("tcp") {
 		return false
 	}
+	if cfg.DisableIPv6 && c("6") {
+		return false
+	}
 	return true
 }