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-rw-r--r--src/or/entrynodes.h9
1 files changed, 5 insertions, 4 deletions
diff --git a/src/or/entrynodes.h b/src/or/entrynodes.h
index c2ddeca04d..32cfff73be 100644
--- a/src/or/entrynodes.h
+++ b/src/or/entrynodes.h
@@ -276,16 +276,17 @@ struct entry_guard_handle_t;
* A restriction to remember which entry guards are off-limits for a given
* circuit.
*
- * Right now, we only use restrictions to block a single guard from being
- * selected; this mechanism is designed to be more extensible in the future,
- * however.
+ * Right now, we only use restrictions to block a single guard and its family
+ * from being selected; this mechanism is designed to be more extensible in
+ * the future, however.
*
* Note: This mechanism is NOT for recording which guards are never to be
* used: only which guards cannot be used on <em>one particular circuit</em>.
*/
struct entry_guard_restriction_t {
/**
- * The guard's RSA identity digest must not equal this.
+ * The guard's RSA identity digest must not equal this; and it must not
+ * be in the same family as any node with this digest.
*/
uint8_t exclude_id[DIGEST_LEN];
};