From b5f24bc299200fcaf48dcb4a5a499ebed2548f97 Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <stephen.hemminger@vyatta.com>
Date: Mon, 27 Apr 2009 09:58:21 -0700
Subject: Handle errors better in show_mtu

---
 scripts/vyatta-interfaces.pl | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/scripts/vyatta-interfaces.pl b/scripts/vyatta-interfaces.pl
index de5fa49..45d18d8 100755
--- a/scripts/vyatta-interfaces.pl
+++ b/scripts/vyatta-interfaces.pl
@@ -157,7 +157,11 @@ sub get_mtu {
 
 sub show_mtu {
     my $name = shift;
-    my $mtu = get_mtu($name);
+    my $intf = new Vyatta::Interface($name);
+    die "$name does not match any known interface name type\n"
+	unless $intf;
+
+    my $mtu = $intf->mtu();
     print "$mtu\n" if $mtu;
 }
 
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