diff -up e-smith-lib-2.2.0/root/usr/lib/perl5/site_perl/esmith/tcpsvd.pm.serialize_peers e-smith-lib-2.2.0/root/usr/lib/perl5/site_perl/esmith/tcpsvd.pm
--- e-smith-lib-2.2.0/root/usr/lib/perl5/site_perl/esmith/tcpsvd.pm.serialize_peers	2007-01-26 18:51:29.000000000 -0700
+++ e-smith-lib-2.2.0/root/usr/lib/perl5/site_perl/esmith/tcpsvd.pm	2010-10-11 16:25:37.000000000 -0600
@@ -29,6 +29,7 @@ Pape's ipsvd package - see http://smarde
 use esmith::NetworksDB;
 use esmith::ConfigDB;
 use esmith::util;
+use esmith::lockfile;
 use Carp;
 
 =head2 configure_peers($service [, $peers_directory] )
@@ -95,6 +96,8 @@ sub configure_peers
 
     $nets{'127.0.0.1'} = 1;
 
+    # Setup lock on peers directory while we manipulate it
+    my $lock = esmith::lockfile::LockFileOrWait("$peers/local");
 
     # Now manage a set of symlinks to the "local" instructions file
     foreach my $insfile (readdir (PEERS))
@@ -129,6 +132,9 @@ sub configure_peers
 	symlink "0", "$peers/$gw_ip" or
 	      warn "Cannot add instructions file for $peers/$gw_ip: $!\n";
     }
+
+    # Unlock peers directory
+    $lock && esmith::lockfile::UnlockFile($lock);
 }
 
 1;