diff --git a/changes/bug40698 b/changes/bug40698
new file mode 100644
index 0000000000..98ddd4f968
--- /dev/null
+++ b/changes/bug40698
@@ -0,0 +1,11 @@
+  o Minor bugfixes (dirauth):
+    - Directory authorities stop voting a consensus "Measured" weight
+      for relays with the Authority flag. Now these relays will be
+      considered unmeasured, which should reserve their bandwidth
+      for their dir auth role and minimize distractions from other
+      roles. In place of the "Measured" weight, they now include a
+      "MeasuredButAuthority" weight (not used by anything) so the
+      bandwidth authority's opinion on this relay can be recorded for
+      posterity. Lastly, remove the AuthDirDontVoteOnDirAuthBandwidth
+      torrc option which never worked right. Fixes bugs 40698 and 40700;
+      bugfix on 0.4.7.2-alpha.
diff --git a/src/feature/nodelist/fmt_routerstatus.c b/src/feature/nodelist/fmt_routerstatus.c
index 95379a7721..8c02a302af 100644
--- a/src/feature/nodelist/fmt_routerstatus.c
+++ b/src/feature/nodelist/fmt_routerstatus.c
@@ -169,9 +169,20 @@ routerstatus_format_entry(const routerstatus_t *rs, const char *version,
     smartlist_add_asprintf(chunks,
                      "w Bandwidth=%d", bw_kb);
 
+    /* Include the bandwidth weight from our external bandwidth
+     * authority, if we have one. */
     if (format == NS_V3_VOTE && vrs && vrs->has_measured_bw) {
-      smartlist_add_asprintf(chunks,
-                       " Measured=%d", vrs->measured_bw_kb);
+      if (!rs->is_authority) { /* normal case */
+        smartlist_add_asprintf(chunks,
+                         " Measured=%d", vrs->measured_bw_kb);
+      } else {
+       /* dir auth special case: don't give it a Measured line, so we
+        * can reserve its attention for authority-specific activities.
+        * But do include the bwauth's opinion so it can be recorded for
+        * posterity. See #40698 for details. */
+        smartlist_add_asprintf(chunks,
+                         " MeasuredButAuthority=%d", vrs->measured_bw_kb);
+      }
     }
     /* Write down guardfraction information if we have it. */
     if (format == NS_V3_VOTE && vrs && vrs->status.has_guardfraction) {