diff --git a/extensions/libxt_ipp2p.man b/extensions/libxt_ipp2p.man
index cdaf3c3..9a76451 100644
--- a/extensions/libxt_ipp2p.man
+++ b/extensions/libxt_ipp2p.man
@@ -1,12 +1,12 @@
 This module matches certain packets in P2P flows. It is not
 designed to match all packets belonging to a P2P connection - 
-use IPP2P together with CONNMARK for this purpose. Also visit
-http://www.ipp2p.org for detailed information.
-
+use IPP2P together with CONNMARK for this purpose.
+.PP
 Use it together with -p tcp or -p udp to search these protocols
 only or without -p switch to search packets of both protocols.
-
-IPP2P provides the following options:
+.PP
+IPP2P provides the following options, of which one or more may be specified
+on the command line:
 .TP
 .B "--edk "
 Matches as many eDonkey/eMule packets as possible.
@@ -38,3 +38,11 @@ Matches Ares and AresLite packets. Use together with -j DROP only.
 .B "--debug "
 Prints some information about each hit into kernel logfile. May 
 produce huge logfiles so beware!
+.PP
+Note that ipp2p may not (and often, does not) identify all packets that are
+exchanged as a result of running filesharing programs.
+.PP
+There is more information on http://ipp2p.org/ , but it has not been updated
+since September 2006, and the syntax there is different from the ipp2p.c
+provided in Xtables-addons; most importantly, the --ipp2p flag was removed due
+to its ambiguity to match "all known" protocols.