diff --git a/README.md b/README.md
index 0e296b8..a4d5444 100644
--- a/README.md
+++ b/README.md
@@ -8,26 +8,11 @@ This daemon is an IGMP querier helper for the Linux bridge.
 Configuration
 -------------
 
-```ApacheConf
-# Global settings followed by per-interface enable/disable of features
+By default `querierd` is passive on all interfaces.  To activate IGMPv3
+querier, add whitespace separated interface names to the .conf file.
 
-# Query interval can be [1,1024], default 125.  Recommended not go below 10
-#igmp-query-interval 125
-
-# Last member query interval [1,1024], default 1.  The igmp-robustness
-# setting controls the last member query count.
-#igmp-query-last-member-interval 1
-
-# Robustness can be [2,10], default 2.  Recommended to use 2
-#igmp-robustness 2
-
-# IP Option Router Alert is enabled by default
-#no router-alert
-
-# Disble all, or enable plus one of the IGMP versions, wich is the startup
-# version, with fallback to older versions if older clients appear.
-# iface <IFNAME> [enable | disable] [igmpv1 | igmpv2 | igmpv3]
-```
+> **Note:** this is a temporary file format, a later release will include
+>           more advanced settings, without being backwards compatible!
 
 
 Origin & References
diff --git a/TODO.md b/TODO.md
index 4d57c17..a7ab912 100644
--- a/TODO.md
+++ b/TODO.md
@@ -6,7 +6,31 @@ Ideas for v1.0
    - granular enable/disable of IGMP/MLD
    - configurable query interval
    - static join
- - add basic README.md
- - add initial ChangeLog.md
+   - see proposal below
  - Update Makefile.am, include text files in dist
- - add release.yml for automatic releases on tag
+
+
+.conf file format
+-----------------
+
+```ApacheConf
+# Global settings followed by per-interface enable/disable of features
+
+# Query interval can be [1,1024], default 125.  Recommended not go below 10
+#igmp-query-interval 125
+
+# Last member query interval [1,1024], default 1.  The igmp-robustness
+# setting controls the last member query count.
+#igmp-query-last-member-interval 1
+
+# Robustness can be [2,10], default 2.  Recommended to use 2
+#igmp-robustness 2
+
+# IP Option Router Alert is enabled by default
+#no router-alert
+
+# Disble all, or enable plus one of the IGMP versions, wich is the startup
+# version, with fallback to older versions if older clients appear.
+#iface <IFNAME> [enable | disable] [igmpv1 | igmpv2 | igmpv3]
+```
+