diff --git a/test/features/known_failures_Linux.json b/test/features/known_failures_Linux.json
index fd96250..9bf600d 100644
--- a/test/features/known_failures_Linux.json
+++ b/test/features/known_failures_Linux.json
@@ -1,8 +1,6 @@
 [
   "c_glib-limit_container_length_binary_buffered-ip",
   "c_glib-limit_string_length_binary_buffered-ip",
-  "cpp-theader_framed_binary_header_buffered-ip",
-  "cpp-theader_unframed_binary_header_buffered-ip",
   "csharp-limit_container_length_binary_buffered-ip",
   "csharp-limit_container_length_compact_buffered-ip",
   "csharp-limit_string_length_binary_buffered-ip",
diff --git a/test/known_failures_Linux.json b/test/known_failures_Linux.json
index 25eea2d..ac409bf 100644
--- a/test/known_failures_Linux.json
+++ b/test/known_failures_Linux.json
@@ -9,14 +9,8 @@
   "cpp-cpp_compact_http-domain",
   "cpp-cpp_compact_http-ip",
   "cpp-cpp_compact_http-ip-ssl",
-  "cpp-cpp_header_buffered-domain",
-  "cpp-cpp_header_buffered-ip",
   "cpp-cpp_header_buffered-ip-ssl",
-  "cpp-cpp_header_framed-domain",
-  "cpp-cpp_header_framed-ip",
   "cpp-cpp_header_framed-ip-ssl",
-  "cpp-cpp_header_http-domain",
-  "cpp-cpp_header_http-ip",
   "cpp-cpp_header_http-ip-ssl",
   "cpp-cpp_json_buffered-ip-ssl",
   "cpp-cpp_json_framed-ip",
@@ -60,6 +54,12 @@
   "csharp-nodejs_json_framed-ip-ssl",
   "csharp-perl_binary_buffered-ip-ssl",
   "csharp-perl_binary_framed-ip-ssl",
+  "csharp-py3_binary_buffered-ip-ssl",
+  "csharp-py3_binary_framed-ip-ssl",
+  "csharp-py3_compact_buffered-ip-ssl",
+  "csharp-py3_compact_framed-ip-ssl",
+  "csharp-py3_json_buffered-ip-ssl",
+  "csharp-py3_json_framed-ip-ssl",
   "csharp-py_binary-accel_buffered-ip-ssl",
   "csharp-py_binary-accel_framed-ip-ssl",
   "csharp-py_binary_buffered-ip-ssl",
@@ -68,12 +68,6 @@
   "csharp-py_compact_framed-ip-ssl",
   "csharp-py_json_buffered-ip-ssl",
   "csharp-py_json_framed-ip-ssl",
-  "csharp-py3_binary_buffered-ip-ssl",
-  "csharp-py3_binary_framed-ip-ssl",
-  "csharp-py3_compact_buffered-ip-ssl",
-  "csharp-py3_compact_framed-ip-ssl",
-  "csharp-py3_json_buffered-ip-ssl",
-  "csharp-py3_json_framed-ip-ssl",
   "erl-cpp_compact_buffered-ip",
   "erl-cpp_compact_buffered-ip-ssl",
   "erl-cpp_compact_framed-ip",