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+++ b/README.md
@@ -69,6 +69,34 @@ make sure you really do have the latest files run `pacman -Syu` *twice*.
To get a better idea what happens in the background have a look at
[the request flow chart](FLOW.md).
+Current caveat
+--------------
+
+With its latest release `pacman` now supports a *server error limit*: Three
+download errors from a server results in the server being skipped for the
+remainder of this transaction.
+However `pacredir` sends a "*404 - not found*" response if the file is not
+available in local network - and is skipped after just three misses.
+
+This new feature is not configurable at runtime, so rebuilding `pacman` with
+this patch is the only way to make things work with `pacredir`.
+
+ --- a/lib/libalpm/dload.c
+ +++ b/lib/libalpm/dload.c
+ @@ -60,7 +60,7 @@ static int curl_gethost(const char *url, char *buffer, size_t buf_len);
+
+ /* number of "soft" errors required to blacklist a server, set to 0 to disable
+ * server blacklisting */
+ -const unsigned int server_error_limit = 3;
+ +const unsigned int server_error_limit = 0;
+
+ struct server_error_count {
+ char server[HOSTNAME_SIZE];
+
+Let's hope
+[FS#23407 - Allow soft failures on Server URLs](https://bugs.archlinux.org/task/23407)
+is implemented any time soon.
+
Security
--------