diff --git a/.known-issues/doc/networking.conf b/.known-issues/doc/networking.conf
index 7085840d83..e49927fd4c 100644
--- a/.known-issues/doc/networking.conf
+++ b/.known-issues/doc/networking.conf
@@ -64,3 +64,7 @@
 ^(?P<filename>([\-:\\/\w\.])+[/\\]doc[/\\]api[/\\]networking.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected end of definition. \[error at [0-9]+]
 ^.*net_stats_tc.[a-z]+
 ^[- \t]*\^
+#
+# stray duplicate definition warnings
+#
+^(?P<filename>([\-:\\/\w\.])+[/\\]doc[/\\]api[/\\]networking.rst):(?P<lineno>[0-9]+): WARNING: Duplicate declaration.