diff --git a/sshuttle/client.py b/sshuttle/client.py
index 5ccd2b1..7a7b6d7 100644
--- a/sshuttle/client.py
+++ b/sshuttle/client.py
@@ -534,7 +534,8 @@ def main(listenip_v6, listenip_v4,
         else:
             listenip_v6 = None
 
-    required.ipv6 = len(subnets_v6) > 0 or len(nslist_v6) > 0
+    required.ipv6 = len(subnets_v6) > 0 or len(nslist_v6) > 0 \
+        or listenip_v6 is not None
     required.udp = avail.udp
     required.dns = len(nslist) > 0