MINOR: tcp: add support for the "v4v6" bind option
Commit 9b6700f added "v6only". As suggested by Vincent Bernat, it is
sometimes useful to have the opposite option to force binding to the
two protocols when the system is configured to bind to v6 only by
default. This option does exactly this. v6only still has precedence.
diff --git a/doc/configuration.txt b/doc/configuration.txt
index aa21212..223d479 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -7156,11 +7156,19 @@
kernel version. Some distribution kernels include backports of the feature,
so check for support with your vendor.
+v4v6
+ Is an optional keyword which is supported only on most recent systems
+ including Linux kernels >= 2.4.21. It is used to bind a socket to both IPv4
+ and IPv6 when it uses the default address. Doing so is sometimes necessary
+ on systems which bind to IPv6 only by default. It has no effect on non-IPv6
+ sockets, and is overriden by the "v6only" option.
+
v6only
Is an optional keyword which is supported only on most recent systems
including Linux kernels >= 2.4.21. It is used to bind a socket to IPv6 only
when it uses the default address. Doing so is sometimes preferred to doing it
- system-wide as it is per-listener. It has no effect on non-IPv6 sockets.
+ system-wide as it is per-listener. It has no effect on non-IPv6 sockets and
+ has precedence over the "v4v6" option.
uid <uid>
Sets the owner of the UNIX sockets to the designated system uid. It can also