--- loncom/lonnet/perl/lonnet.pm	2007/06/11 19:31:41	1.887
+++ loncom/lonnet/perl/lonnet.pm	2007/06/13 01:43:54	1.888
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.887 2007/06/11 19:31:41 albertel Exp $
+# $Id: lonnet.pm,v 1.888 2007/06/13 01:43:54 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -7600,14 +7600,8 @@ sub machine_ids {
     my ($hostname) = @_;
     $hostname ||= &hostname($perlvar{'lonHostID'});
     my @ids;
-    my %hostname = &all_hostnames();
-    while( my($id, $name) = each(%hostname)) {
-#	&logthis("-$id-$name-$hostname-");
-	if ($hostname eq $name) {
-	    push(@ids,$id);
-	}
-    }
-    return @ids;
+    my %name_to_host = &all_names();
+    return @{ $name_to_host{$hostname} };
 }
 
 sub additional_machine_domains {
@@ -7720,6 +7714,7 @@ sub correct_line_ends {
 
 sub goodbye {
    &logthis("Starting Shut down");
+		    &logthis("test");
 #not converted to using infrastruture and probably shouldn't be
    &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
 #converted
@@ -7835,6 +7830,7 @@ sub get_dns {
     my %hostdom;
     my %libserv;
     my $loaded;
+    my %name_to_host;
 
     sub parse_hosts_tab {
 	my ($file) = @_;
@@ -7846,6 +7842,7 @@ sub get_dns {
 	    $name=~s/\s//g;
 	    if ($id && $domain && $role && $name) {
 		$hostname{$id}=$name;
+		push(@{$name_to_host{$name}}, $id);
 		$hostdom{$id}=$domain;
 		if ($role eq 'library') { $libserv{$id}=$name; }
 	    }
@@ -7884,6 +7881,12 @@ sub get_dns {
 	return %hostname;
     }
 
+    sub all_names {
+	&load_hosts_tab() if (!$loaded);
+
+	return %name_to_host;
+    }
+
     sub is_library {
 	&load_hosts_tab() if (!$loaded);
 
@@ -8002,14 +8005,13 @@ sub get_dns {
 		return %iphost;
 	    }
 	}
-	my %hostname = &all_hostnames();
-	foreach my $id (keys(%hostname)) {
-	    my $name=&hostname($id);
+	my %name_to_host = &all_names();
+	foreach my $name (keys(%name_to_host)) {
 	    my $ip;
 	    if (!exists($name_to_ip{$name})) {
 		$ip = gethostbyname($name);
 		if (!$ip || length($ip) ne 4) {
-		    &logthis("Skipping host $id name $name no IP found");
+		    &logthis("Skipping name $name no IP found");
 		    next;
 		}
 		$ip=inet_ntoa($ip);
@@ -8017,8 +8019,10 @@ sub get_dns {
 	    } else {
 		$ip = $name_to_ip{$name};
 	    }
-	    $lonid_to_ip{$id} = $ip;
-	    push(@{$iphost{$ip}},$id);
+	    foreach my $id (@{ $name_to_host{$name} }) {
+		$lonid_to_ip{$id} = $ip;
+	    }
+	    push(@{$iphost{$ip}},@{$name_to_host{$name}});
 	}
 	&Apache::lonnet::do_cache_new('iphost','iphost',
 				      [\%iphost,\%name_to_ip,\%lonid_to_ip],