X-Git-Url: https://git.distorted.org.uk/~mdw/tripe/blobdiff_plain/cf2e4ea6c40973c25002e84374c194bb5e4c4973..f5d185e447417bb0490044474d25707012724d6d:/svc/conntrack.8.in

diff --git a/svc/conntrack.8.in b/svc/conntrack.8.in
index 3e4fc725..3d1a54a4 100644
--- a/svc/conntrack.8.in
+++ b/svc/conntrack.8.in
@@ -101,6 +101,14 @@ connecting the new one.  If no match is found in a particular group,
 then no peers in the group are connected.  Strange and unhelpful things
 will happen if you put the same peer in several different groups.
 .PP
+The tags
+.B down
+and
+.BI down/ anything
+are special and mean that no peer from the group should be active.  This
+is useful for detecting a `home' network, where a VPN is unnecessary
+(or, worse, break routing completely).
+.PP
 The notion of `current IP address' is somewhat vague.  The
 .B conntrack
 service calculates it as the source address that the host would put on