diff --git a/Shorewall/known_problems.txt b/Shorewall/known_problems.txt
index 673aa4351..d73979403 100644
--- a/Shorewall/known_problems.txt
+++ b/Shorewall/known_problems.txt
@@ -10,3 +10,6 @@
    there are any interfaces specifying 'routefilter', specifying
    'routefilter' on any interface has the effect of setting the option
    on all interfaces.
+
+   A workaround for this problem is included in Shorewall 4.4.5.1.
+