diff --git a/ChangeLog b/ChangeLog
index dd5c248..ab5893c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -299,6 +299,24 @@ Version 1.8.0
 Version 1.6.16
 *******************************************************************************
 
+2012-03-05 Marcelo Roberto Jimenez <mroberto(at)users.sourceforge.net>
+
+	SF Bug Tracker id 2989399 - UpnpSetVirtualDirCallbacks API removal in 1.6.x
+
+	Submitted: Nick Leverton ( leveret ) - 2010-04-19 07:44:10 PDT
+
+	Details: The recent codebase merge has removed a significant API call
+	which is used by several pupnp devices such as mediatomb and gmediaserver.
+	UpnpSetVirtualDirCallbacks() has been replaced by individual routines to
+	set each callback. Essentially this means that 1.6.7 will in fact be a majo
+	bump and 1.6.6 devices can no longer link against it. Could we have the call
+	reinstated please, perhaps as a wrapper around the individual calls ? As
+	it is, all distros will have to patch their 1.6.x apps, rebuild and re-link them.
+
+	The other removed API calls and external variables don't seem to be used
+	by any of the apps I have copies of, but UpnpSetVirtualDirCallbacks is
+	important for maintaining compatibility within 1.6.x.
+
 2012-03-05 Marcelo Roberto Jimenez <mroberto(at)users.sourceforge.net>
 
 	SF Bug Tracker id 3325246 - Memory Leak in XML Parser
diff --git a/configure.ac b/configure.ac
index 3d43000..c6f0882 100644
--- a/configure.ac
+++ b/configure.ac
@@ -284,11 +284,18 @@ dnl ############################################################################
 dnl # Release 1.6.16:
 dnl # "current:revision:age"
 dnl #
-dnl # - 
+dnl # - Code has changed in ixml
+dnl #	revision: 6 -> 7
+dnl # - Code has changed in upnp
+dnl #	revision: 1 -> 2
+dnl # - interface changed/added/removed in upnp
+dnl #   current++(9); revision = 0
+dnl # - interface added in upnp
+dnl #   age++(3)
 dnl #
-dnl #AC_SUBST([LT_VERSION_IXML],       [::])
-dnl #AC_SUBST([LT_VERSION_THREADUTIL], [::])
-dnl #AC_SUBST([LT_VERSION_UPNP],       [::])
+dnl #AC_SUBST([LT_VERSION_IXML],       [2:7:0])
+dnl #AC_SUBST([LT_VERSION_THREADUTIL], [6:0:0])
+dnl #AC_SUBST([LT_VERSION_UPNP],       [9:0:3])
 dnl #
 dnl ############################################################################
 dnl # Release 1.8.0: