minor docs

diff --git a/mail-route b/mail-route
index ab26a1333b733eaba7e5307d70df3ed1f18cbce4..2e08a83309a7481a8989b23e62805aadb5e142b4 100755 (executable)
--- a/mail-route
+++ b/mail-route
@@ -25,7 +25,7 @@ usage() {
 Usage: mail-route start|stop|show
 
 Marks tcp packets on port 25 and 143 to be routed through
-a vpn ip.
+a vpn ip. Is idempotent.
 EOF
     exit $1
 }