diff --git a/pkgs/servers/restund/default.nix b/pkgs/servers/restund/default.nix
index d6952e9700e..cf07d0e6e3e 100644
--- a/pkgs/servers/restund/default.nix
+++ b/pkgs/servers/restund/default.nix
@@ -28,5 +28,6 @@ stdenv.mkDerivation rec {
     downloadPage = "http://www.creytiv.com/pub/";
     updateWalker = true;
     downloadURLRegexp = "/restund-.*[.]tar[.]";
+    broken = true; # probably due to glibc-2.20
   };
 }
diff --git a/pkgs/tools/networking/openssh/default.nix b/pkgs/tools/networking/openssh/default.nix
index 05b97bdcaac..19957de5d1c 100644
--- a/pkgs/tools/networking/openssh/default.nix
+++ b/pkgs/tools/networking/openssh/default.nix
@@ -75,5 +75,6 @@ stdenv.mkDerivation rec {
     license = stdenv.lib.licenses.bsd2;
     platforms = platforms.unix;
     maintainers = with maintainers; [ eelco ];
+    broken = hpnSupport; # probably after 6.7 update
   };
 }