--- ProcessManager.pm.orig	2011-07-06 02:36:15.000000000 +0900
+++ ProcessManager.pm	2011-07-24 13:39:59.000000000 +0900
@@ -8,6 +8,7 @@
 use Carp;
 use English qw(-no_match_vars);
 use IO::Socket;
+use Socket6;
 use POSIX qw(:sys_wait_h);
 use Storable qw(nstore_fd fd_retrieve);