X-Git-Url: https://git.distorted.org.uk/~mdw/yaid/blobdiff_plain/dd5e35da5f74e9ed3bbfb639c2bab927a12c634f..d817f2c3f8bbfcacd2a9cb255b66bf7d9d5dedfa:/linux.c

diff --git a/linux.c b/linux.c
index 8ed0396..ec4fe4e 100644
--- a/linux.c
+++ b/linux.c
@@ -434,6 +434,13 @@ void identify(struct query *q)
 	  !sockeq(q->ao, &s[i^1], &q->s[R]))
 	continue;
 
+      /* As a trap for the unwary, this file contains unhelpful entries which
+       * just mirror the source/destination addresses.  If this is one of
+       * those, we'll be stuck in a cycle talking to ourselves.
+       */
+      if (sockeq(q->ao, &s[i], &s[i^3]))
+	continue;
+
       /* We win.  The remaining address must be the client host.  We should
        * proxy this query.
        */