3 files changed, 13 insertions, 4 deletions

diff --git a/Documentation/asciidoc.conf b/Documentation/asciidoc.conf
index 10c1a151a..40d43b78e 100644
--- a/Documentation/asciidoc.conf
+++ b/Documentation/asciidoc.conf
@@ -8,6 +8,7 @@
 # the command.
 
 [attributes]
+asterisk=*
 plus=+
 caret=^
 startsb=[
diff --git a/Documentation/config.txt b/Documentation/config.txt
index e37b9d6bb..e523997e7 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -937,9 +937,17 @@ pack.indexVersion::
 	legacy pack index used by Git versions prior to 1.5.2, and 2 for
 	the new pack index with capabilities for packs larger than 4 GB
 	as well as proper protection against the repacking of corrupted
-	packs.  Version 2 is selected and this config option ignored
-	whenever the corresponding pack is larger than 2 GB.  Otherwise
-	the default is 1.
+	packs.  Version 2 is the default.  Note that version 2 is enforced
+	and this config option ignored whenever the corresponding pack is
+	larger than 2 GB.
++
+If you have an old git that does not understand the version 2 `{asterisk}.idx` file,
+cloning or fetching over a non native protocol (e.g. "http" and "rsync")
+that will copy both `{asterisk}.pack` file and corresponding `{asterisk}.idx` file from the
+other side may give you a repository that cannot be accessed with your
+older version of git. If the `{asterisk}.pack` file is smaller than 2 GB, however,
+you can use linkgit:git-index-pack[1] on the *.pack file to regenerate
+the `{asterisk}.idx` file.
 
 pack.packSizeLimit::
 	The default maximum size of a pack.  This setting only affects
diff --git a/pack-write.c b/pack-write.c
index f52cabe83..a8f026993 100644
--- a/pack-write.c
+++ b/pack-write.c
@@ -2,7 +2,7 @@
 #include "pack.h"
 #include "csum-file.h"
 
-uint32_t pack_idx_default_version = 1;
+uint32_t pack_idx_default_version = 2;
 uint32_t pack_idx_off32_limit = 0x7fffffff;
 
 static int sha1_compare(const void *_a, const void *_b)