diff --git a/changes/bug22310 b/changes/bug22310
new file mode 100644
index 000000000..c8017daff
--- /dev/null
+++ b/changes/bug22310
@@ -0,0 +1,8 @@
+  o Major bugfixes (performance, load balancing):
+    - Directory authorities no longer vote in favor of the Guard flag
+      for relays that don't advertise directory support. Starting in Tor
+      0.3.0.1-alpha, Tor clients have been avoiding using such relays in
+      the Guard position, leading to increasingly broken load balancing
+      for the 5%-or-so of Guards that don't advertise directory support.
+      Fixes bug 22310; bugfix on 0.3.0.6.
+
diff --git a/src/or/dirserv.c b/src/or/dirserv.c
index 0f47a8398..f0333e288 100644
--- a/src/or/dirserv.c
+++ b/src/or/dirserv.c
@@ -2266,6 +2266,7 @@ set_routerstatus_from_routerinfo(routerstatus_t *rs,
   rs->is_valid = node->is_valid;
 
   if (node->is_fast && node->is_stable &&
+      ri->supports_tunnelled_dir_requests &&
       ((options->AuthDirGuardBWGuarantee &&
         routerbw_kb >= options->AuthDirGuardBWGuarantee/1000) ||
        routerbw_kb >= MIN(guard_bandwidth_including_exits_kb,