From c5ddf3d700ee5c0b10a69f798ea0d3752a250759 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 25 Jul 2021 19:29:10 +0100
Subject: [PATCH 1/1] config: Substutiton, improve docs

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 README.config | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/README.config b/README.config
index 552843b..a28be23 100644
--- a/README.config
+++ b/README.config
@@ -70,10 +70,11 @@ Exceptional settings:
   ipif
      Command to run to create and communicate with local network
      interface.  Passed to sh -c.  Must speak SLIP on stdin/stdout.
-     The following additional interpolations aare substituted:
+     The following interpolations aare substituted:
                        %(local)s  %(peer)s  %(rnets)s   %(ifname)s
           on server    <vaddr>    <vrelay>  <vnetwork>  <ifname_server>
           on client    <client>   <vaddr>   <vroutes>   <ifname_client>
+     Plus %(mtu)s (and %% to indicate a literal %).
      ["userv root ipif %(local)s,%(peer)s,%(mtu)s,slip %(rnets)s"]
 
      On server: applies to all clients; not looked up in
-- 
2.30.2