[3755] Add started message to log output

Add a message that indicates when the v4 or v6 server
has completed processing its configuration and is about
to enter the loop to process dhcp messages.

src/bin/dhcp4/dhcp4_messages.mes

@@ -371,6 +371,11 @@ core component within the DHCPv4 server (the Dhcpv4 server object)
 has failed.  As a result, the server will exit.  The reason for the
 failure is given within the message.
 
+% DHCP4_STARTED Kea DHCPv4 server version %1 started
+This informational message indicates that the DHCPv4 server has
+processed all configuration information and is ready to process
+DHCPv4 packets.  The version is also printed.
+
 % DHCP4_STARTING Kea DHCPv4 server version %1 starting
 This informational message indicates that the DHCPv4 server has
 processed any command-line switches and is starting. The version

src/bin/dhcp4/main.cc

@@ -1,4 +1,4 @@
-// Copyright (C) 2011-2012, 2014 Internet Systems Consortium, Inc. ("ISC")
+// Copyright (C) 2011-2012, 2014-2015 Internet Systems Consortium, Inc. ("ISC")
 //
 // Permission to use, copy, modify, and/or distribute this software for any
 // purpose with or without fee is hereby granted, provided that the above
@@ -161,6 +161,9 @@ main(int argc, char* argv[]) {
             return (EXIT_FAILURE);
         }
 
+        // Tell the admin we are ready to process packets
+        LOG_INFO(dhcp4_logger, DHCP4_STARTED).arg(VERSION);
+
         // And run the main loop of the server.
         server.run();
 

src/bin/dhcp6/dhcp6_messages.mes

@@ -550,6 +550,11 @@ standalone mode, not connected to the message queue.  Standalone mode
 is only useful during program development, and should not be used in a
 production environment.
 
+% DHCP6_STARTED Kea DHCPv6 server version %1 started
+This informational message indicates that the IPv6 DHCP server has
+processed all configuration information and is ready to process
+DHCPv6 packets.  The version is also printed.
+
 % DHCP6_STARTING Kea DHCPv6 server version %1 starting
 This informational message indicates that the IPv6 DHCP server has
 processed any command-line switches and is starting. The version

src/bin/dhcp6/main.cc

@@ -1,4 +1,4 @@
-// Copyright (C) 2011-2014 Internet Systems Consortium, Inc. ("ISC")
+// Copyright (C) 2011-2015 Internet Systems Consortium, Inc. ("ISC")
 //
 // Permission to use, copy, modify, and/or distribute this software for any
 // purpose with or without fee is hereby granted, provided that the above
@@ -164,6 +164,9 @@ main(int argc, char* argv[]) {
             return (EXIT_FAILURE);
         }
 
+        // Tell the admin we are ready to process packets
+        LOG_INFO(dhcp6_logger, DHCP6_STARTED).arg(VERSION);
+
         // And run the main loop of the server.
         server.run();