# This statically named section defines global mount
# options that can be applied on all NFS mount.
#
-# Protocol Version [2,3]
-# Nfsvers=3
-#
-# Network Transport [udp,tcp,rdma] (Note: values are case sensitive)
+# Protocol Version [2,3,4]
+# This defines the default protocol version which will
+# be used to start the negotiation with the server.
+# Defaultvers=4
+#
+# Setting this option makes it mandatory the server supports the
+# given version. The mount will fail if the given version is
+# not support by the server.
+# Nfsvers=4
+#
+# Network Protocol [udp,tcp,rdma] (Note: values are case sensitive)
+# This defines the default network protocol which will
+# be used to start the negotiation with the server.
+# Defaultproto=tcp
+#
+# Setting this option makes it mandatory the server supports the
+# given network protocol. The mount will fail if the given network
+# protocol is not supported by the server.
# Proto=tcp
#
# The number of times a request will be retired before