diff --git a/ChangeLog b/ChangeLog
index bfc81298..e726faa8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -12,6 +12,8 @@ version 2.06 ()
     * POD clarification on i_speed() munging by Info.pm
     * [3408506] Fix uninitialized value in IPv6 when neighbor state is 
       incomplete (Michael Borgelt)
+    + Added i_stack_status method that can be used for finding the parent
+      interface for e.g. ADSL interface speed determination
 
 version 2.05 (2011-06-23)
     + Fix broken function call in L2::Aironet
diff --git a/Info.pm b/Info.pm
index c918c460..2b00b53e 100644
--- a/Info.pm
+++ b/Info.pm
@@ -2299,6 +2299,9 @@ ALTEON-TS-PHYSICAL-MIB::agPortCurCfgPortName.
     'i_qlen_out'        => 'ifOutQLen',
     'i_specific'        => 'ifSpecific',
 
+    # IF-MIB::IfStackTable
+    'i_stack_status'    => 'ifStackStatus',
+
     # IP Address Table
     'ip_index'     => 'ipAdEntIfIndex',
     'ip_table'     => 'ipAdEntAddr',