diff --git a/test/known_failures_Linux.json b/test/known_failures_Linux.json
index 658577d..a142796 100644
--- a/test/known_failures_Linux.json
+++ b/test/known_failures_Linux.json
@@ -215,6 +215,12 @@
   "java-d_compact_buffered-ip",
   "java-d_compact_buffered-ip-ssl",
   "java-d_compact_framed-ip",
+  "netcore-csharp_binary_buffered-ip-ssl",
+  "netcore-csharp_binary_framed-ip-ssl",
+  "netcore-csharp_json_framed-ip-ssl",
+  "netcore-csharp_json_buffered-ip-ssl",
+  "netcore-csharp_compact_buffered-ip-ssl",
+  "netcore-csharp_compact_framed-ip-ssl",
   "nodejs-cpp_binary_http-ip",
   "nodejs-cpp_binary_http-ip-ssl",
   "nodejs-cpp_compact_http-ip",