better documentation on create

diff --git a/newns b/newns
index b45c994987c208e9aa570552e2b8c85987c8c3fe..39f8971f94baf6036947eb0ddc50e6503fba08c9 100755 (executable)
--- a/newns
+++ b/newns
@@ -40,7 +40,10 @@ usage() {
 usage: ${0##*/} [OPTS] start|stop NS_NAME
 Setup new or systemd created network namespace with nat and mount namespace
 
--c, --create    Create network namespace. For running outside systemd private net.
+-c, --create    Create a named network namespace. When running from
+                the same network namespace as pid 1, this is set automatically.
+                This is the case when running outside a systemd created
+                private network.
 -h, --help      Show this help and exit.
 
 From within a systemd network namespace, nat it to the outside. This