diff --git a/howto/new-machine-cymru.md b/howto/new-machine-cymru.md
index de3399ec24edeb93ccf6cdd75117605da1608573..99ae652f1e603ae34be31fa52f39c2a53294b4ff 100644
--- a/howto/new-machine-cymru.md
+++ b/howto/new-machine-cymru.md
@@ -226,7 +226,7 @@ TODO: in the last setup, this was also required:
 
     fab -H root@38.229.82.104 host.rewrite-interfaces 38.229.82.104 24 38.229.82.1
 
-TODO: IPv6 configuration.
+TODO: IPv6 configuration also needs to be done by hand. hints in new-machine.
 
 ### serial console