From 53ebeacc0940f065f898783024ebe24a6519a1d3 Mon Sep 17 00:00:00 2001
From: Bill Fenner <>
Date: Thu, 13 Apr 2006 04:03:53 +0000
Subject: [PATCH] Don't call mau_i_duplex_admin_old() if the device doesn't
 implement  the table at all.

---
 Info/MAU.pm | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Info/MAU.pm b/Info/MAU.pm
index 6b6aefd4..8119fe30 100644
--- a/Info/MAU.pm
+++ b/Info/MAU.pm
@@ -169,7 +169,11 @@ sub mau_i_duplex_admin {
     # Older HP4000's don't implement ifMauDefaultType, but we can
     # figure out from ifMauAutoNegCapAdvertised what we'd like.
     if (!defined($mau_type_admin)) {
-        return mau_i_duplex_admin_old($mau,$mau_index,$mau_autostat);
+        if (defined($mau_index)) {
+            return mau_i_duplex_admin_old($mau,$mau_index,$mau_autostat);
+        } else {
+            return undef;
+        }
     }
 
     my %i_duplex_admin;