[1545] Add logging to the DHCPv6 server code

src/bin/dhcp6/Makefile.am

@@ -13,7 +13,7 @@ endif
 
 pkglibexecdir = $(libexecdir)/@PACKAGE@
 
-CLEANFILES = spec_config.h
+CLEANFILES = spec_config.h dhcp6_messages.h dhcp6_messages.cc
 
 man_MANS = b10-dhcp6.8
 DISTCLEANFILES = $(man_MANS)
@@ -37,11 +37,20 @@ endif
 spec_config.h: spec_config.h.pre
 	$(SED) -e "s|@@LOCALSTATEDIR@@|$(localstatedir)|" spec_config.h.pre >$@
 
-BUILT_SOURCES = spec_config.h
+dhcp6_messages.h dhcp6_messages.cc: dhcp6_messages.mes
+	$(top_builddir)/src/lib/log/compiler/message $(top_srcdir)/src/bin/dhcp6/dhcp6_messages.mes
+
+BUILT_SOURCES = spec_config.h dhcp6_messages.h dhcp6_messages.cc
+
 pkglibexec_PROGRAMS = b10-dhcp6
 
-b10_dhcp6_SOURCES = main.cc dhcp6_srv.cc dhcp6_srv.h
+b10_dhcp6_SOURCES  = main.cc
 b10_dhcp6_SOURCES += ctrl_dhcp6_srv.cc ctrl_dhcp6_srv.h
+b10_dhcp6_SOURCES += dhcp6_log.cc dhcp6_log.h
+b10_dhcp6_SOURCES += dhcp6_srv.cc dhcp6_srv.h
+
+nodist_b10_dhcp6_SOURCES = dhcp6_messages.h dhcp6_messages.cc
+EXTRA_DIST += dhcp6_messages.mes
 
 if USE_CLANGPP
 # Disable unused parameter warning caused by some of the
@@ -49,7 +58,7 @@ if USE_CLANGPP
 b10_dhcp6_CXXFLAGS = -Wno-unused-parameter
 endif
 
-b10_dhcp6_LDADD = $(top_builddir)/src/lib/exceptions/libb10-exceptions.la
+b10_dhcp6_LDADD  = $(top_builddir)/src/lib/exceptions/libb10-exceptions.la
 b10_dhcp6_LDADD += $(top_builddir)/src/lib/asiolink/libb10-asiolink.la
 b10_dhcp6_LDADD += $(top_builddir)/src/lib/log/libb10-log.la
 b10_dhcp6_LDADD += $(top_builddir)/src/lib/dhcp/libb10-dhcp++.la

src/bin/dhcp6/ctrl_dhcp6_srv.cc

@@ -13,28 +13,30 @@
 // PERFORMANCE OF THIS SOFTWARE.
 
 #include <config.h>
+
 #include <cassert>
 #include <iostream>
 
-#include <cc/session.h>
+#include <asiolink/asiolink.h>
 #include <cc/data.h>
-#include <exceptions/exceptions.h>
+#include <cc/session.h>
 #include <cc/session.h>
 #include <config/ccsession.h>
-#include <util/buffer.h>
-#include <dhcp6/spec_config.h>
 #include <dhcp6/ctrl_dhcp6_srv.h>
+#include <dhcp6/dhcp6_log.h>
+#include <dhcp6/spec_config.h>
 #include <dhcp/iface_mgr.h>
-#include <asiolink/asiolink.h>
+#include <exceptions/exceptions.h>
+#include <util/buffer.h>
 
-using namespace std;
-using namespace isc::util;
-using namespace isc::dhcp;
-using namespace isc::util;
-using namespace isc::data;
+using namespace isc::asiolink;
 using namespace isc::cc;
 using namespace isc::config;
-using namespace isc::asiolink;
+using namespace isc::data;
+using namespace isc::dhcp;
+using namespace isc::log;
+using namespace isc::util;
+using namespace std;
 
 namespace isc {
 namespace dhcp {
@@ -43,7 +45,8 @@ ControlledDhcpv6Srv* ControlledDhcpv6Srv::server_ = NULL;
 
 ConstElementPtr
 ControlledDhcpv6Srv::dhcp6ConfigHandler(ConstElementPtr new_config) {
-    cout << "b10-dhcp6: Received new config:" << new_config->str() << endl;
+    LOG_DEBUG(dhcp6_logger, DBG_DHCP6_COMMAND, DHCP6_CONFIG_UPDATE)
+              .arg(new_config->str());
     ConstElementPtr answer = isc::config::createAnswer(0,
                              "Thank you for sending config.");
     return (answer);
@@ -51,13 +54,14 @@ ControlledDhcpv6Srv::dhcp6ConfigHandler(ConstElementPtr new_config) {
 
 ConstElementPtr
 ControlledDhcpv6Srv::dhcp6CommandHandler(const string& command, ConstElementPtr args) {
-    cout << "b10-dhcp6: Received new command: [" << command << "], args="
-         << args->str() << endl;
+    LOG_DEBUG(dhcp6_logger, DBG_DHCP6_COMMAND, DHCP6_COMMAND_RECEIVED)
+              .arg(command).arg(args->str());
+
     if (command == "shutdown") {
         if (ControlledDhcpv6Srv::server_) {
             ControlledDhcpv6Srv::server_->shutdown();
         } else {
-            cout << "Server not initialized yet or already shut down." << endl;
+            LOG_WARN(dhcp6_logger, DHCP6_NOT_RUNNING);
             ConstElementPtr answer = isc::config::createAnswer(1,
                                      "Shutdown failure.");
             return (answer);
@@ -93,10 +97,9 @@ void ControlledDhcpv6Srv::establishSession() {
 
     /// @todo: Check if session is not established already. Throw, if it is.
     
-    cout << "b10-dhcp6: my specfile is " << specfile << endl;
-    
+    LOG_DEBUG(dhcp6_logger, DBG_DHCP6_START, DHCP6_CCSESSION_STARTING)
+              .arg(specfile);
     cc_session_ = new Session(io_service_.get_io_service());
-
     config_session_ = new ModuleCCSession(specfile, *cc_session_,
                                           dhcp6ConfigHandler,
                                           dhcp6CommandHandler, false);
@@ -106,8 +109,8 @@ void ControlledDhcpv6Srv::establishSession() {
     /// control with the "select" model of the DHCP server.  This is
     /// fully explained in \ref dhcpv6Session.
     int ctrl_socket = cc_session_->getSocketDesc();
-    cout << "b10-dhcp6: Control session started, socket="
-         << ctrl_socket << endl;
+    LOG_DEBUG(dhcp6_logger, DBG_DHCP6_START, DHCP6_CCSESSION_STARTED)
+              .arg(ctrl_socket);
     IfaceMgr::instance().set_session_socket(ctrl_socket, sessionReader);
 }
 

src/bin/dhcp6/dhcp6_log.cc

+// Copyright (C) 2011  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
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+/// Defines the logger used by the top-level component of b10-dhcp6.
+
+#include "dhcp6_log.h"
+
+namespace isc {
+namespace dhcp {
+
+isc::log::Logger dhcp6_logger("dhcp6");
+
+} // namespace dhcp
+} // namespace isc
+

src/bin/dhcp6/dhcp6_log.h

+// Copyright (C) 2011  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
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+#ifndef __DHCP6_LOG__H
+#define __DHCP6_LOG__H
+
+#include <log/macros.h>
+#include <log/logger_support.h>
+#include <dhcp6/dhcp6_messages.h>
+
+namespace isc {
+namespace dhcp {
+
+/// \brief DHCP6 Logging
+///
+/// Defines the levels used to output debug messages in the non-library part of
+/// the b10-dhcp6 program.  Higher numbers equate to more verbose (and detailed)
+/// output.
+
+// Debug levels used to log information during startup and shutdown.
+const int DBG_DHCP6_START = DBGLVL_START_SHUT;
+const int DBG_DHCP6_SHUT = DBGLVL_START_SHUT;
+
+// Debug level used to log setting information (such as configuration changes).
+const int DBG_DHCP6_COMMAND = DBGLVL_COMMAND;
+
+// Trace basic operations within the code.
+const int DBG_DHCP6_BASIC = DBGLVL_TRACE_BASIC;
+
+// Trace detailed operations, including errors raised when processing invalid
+// packets.  (These are not logged at severities of WARN or higher for fear
+// that a set of deliberately invalid packets set to the server could overwhelm
+// the logging.)
+const int DBG_DHCP6_DETAIL = DBGLVL_TRACE_DETAIL;
+
+// This level is used to log the contents of packets received and sent.
+const int DBG_DHCP6_DETAIL_DATA = DBGLVL_TRACE_DETAIL_DATA;
+
+/// Define the logger for the "dhcp6" module part of b10-dhcp6.  We could define
+/// a logger in each file, but we would want to define a common name to avoid
+/// spelling mistakes, so it is just one small step from there to define a
+/// module-common logger.
+extern isc::log::Logger dhcp6_logger;
+
+} // namespace dhcp6
+} // namespace isc
+
+#endif // __DHCP6_LOG__H

src/bin/dhcp6/dhcp6_srv.cc

@@ -14,23 +14,25 @@
 
 #include <stdlib.h>
 #include <time.h>
+
+#include <asiolink/io_address.h>
+#include <dhcp6/dhcp6_log.h>
+#include <dhcp6/dhcp6_srv.h>
 #include <dhcp/dhcp6.h>
-#include <dhcp/pkt6.h>
 #include <dhcp/iface_mgr.h>
-#include <dhcp6/dhcp6_srv.h>
-#include <dhcp/option6_ia.h>
-#include <dhcp/option6_iaaddr.h>
 #include <dhcp/option6_addrlst.h>
-#include <asiolink/io_address.h>
+#include <dhcp/option6_iaaddr.h>
+#include <dhcp/option6_ia.h>
+#include <dhcp/pkt6.h>
 #include <exceptions/exceptions.h>
 #include <util/io_utilities.h>
 #include <util/range_utilities.h>
 
-using namespace std;
 using namespace isc;
-using namespace isc::dhcp;
 using namespace isc::asiolink;
+using namespace isc::dhcp;
 using namespace isc::util;
+using namespace std;
 
 const std::string HARDCODED_LEASE = "2001:db8:1::1234:abcd";
 const uint32_t HARDCODED_T1 = 1500; // in seconds
@@ -40,14 +42,14 @@ const uint32_t HARDCODED_VALID_LIFETIME = 7200; // in seconds
 const std::string HARDCODED_DNS_SERVER = "2001:db8:1::1";
 
 Dhcpv6Srv::Dhcpv6Srv(uint16_t port) {
-    cout << "Initialization: opening sockets on port " << port << endl;
+    LOG_DEBUG(dhcp6_logger, DBG_DHCP6_START, DHCP6_OPEN_SOCKET).arg(port);
 
-    // first call to instance() will create IfaceMgr (it's a singleton)
+    // First call to instance() will create IfaceMgr (it's a singleton)
     // it may throw something if things go wrong
     try {
 
         if (IfaceMgr::instance().countIfaces() == 0) {
-            cout << "Failed to detect any network interfaces. Aborting." << endl;
+            LOG_ERROR(dhcp6_logger, DHCP6_NO_INTERFACES);
             shutdown_ = true;
             return;
         }
@@ -59,7 +61,7 @@ Dhcpv6Srv::Dhcpv6Srv(uint16_t port) {
         /// @todo: instantiate LeaseMgr here once it is imlpemented.
 
     } catch (const std::exception &e) {
-        cerr << "Error during DHCPv4 server startup: " << e.what() << endl;
+        LOG_ERROR(dhcp6_logger, DHCP6_SRV_CONSTRUCT_ERROR).arg(e.what());
         shutdown_ = true;
         return;
     }
@@ -68,13 +70,11 @@ Dhcpv6Srv::Dhcpv6Srv(uint16_t port) {
 }
 
 Dhcpv6Srv::~Dhcpv6Srv() {
-    cout << "DHCPv6 Srv shutdown." << endl;
-
     IfaceMgr::instance().closeSockets();
 }
 
 void Dhcpv6Srv::shutdown() {
-    cout << "b10-dhcp6: DHCPv6 server shutdown." << endl;
+    LOG_DEBUG(dhcp6_logger, DBG_DHCP6_BASIC, DHCP6_SHUTDOWN_REQUEST);
     shutdown_ = true;
 }
 
@@ -89,42 +89,58 @@ bool Dhcpv6Srv::run() {
 
         if (query) {
             if (!query->unpack()) {
-                cout << "Failed to parse incoming packet" << endl;
+                LOG_DEBUG(dhcp6_logger, DBG_DHCP6_DETAIL,
+                          DHCP6_PACKET_PARSE_FAIL);
                 continue;
             }
+            LOG_DEBUG(dhcp6_logger, DBG_DHCP6_DETAIL, DHCP6_PACKET_RECEIVED)
+                      .arg(serverReceivedPacketName(query->getType()))
+                      .arg(query->getType());
+            LOG_DEBUG(dhcp6_logger, DBG_DHCP6_DETAIL_DATA, DHCP6_QUERY_DATA)
+                      .arg(query->getType())
+                      .arg(query->getBuffer().getLength())
+                      .arg(query->toText());
+
             switch (query->getType()) {
             case DHCPV6_SOLICIT:
                 rsp = processSolicit(query);
                 break;
+
             case DHCPV6_REQUEST:
                 rsp = processRequest(query);
                 break;
+
             case DHCPV6_RENEW:
                 rsp = processRenew(query);
                 break;
+
             case DHCPV6_REBIND:
                 rsp = processRebind(query);
                 break;
+
             case DHCPV6_CONFIRM:
                 rsp = processConfirm(query);
                 break;
+
             case DHCPV6_RELEASE:
                 rsp = processRelease(query);
                 break;
+
             case DHCPV6_DECLINE:
                 rsp = processDecline(query);
                 break;
+
             case DHCPV6_INFORMATION_REQUEST:
                 rsp = processInfRequest(query);
                 break;
+
             default:
-                cout << "Unknown pkt type received:"
-                     << query->getType() << endl;
+                // Only action is to output a message if debug is enabled,
+                // and that will be covered by the debug statement before
+                // the "switch" statement.
+                ;
             }
 
-            cout << "Received " << query->getBuffer().getLength() << " bytes packet type="
-                 << query->getType() << endl;
-            cout << query->toText();
             if (rsp) {
                 rsp->setRemoteAddr(query->getRemoteAddr());
                 rsp->setLocalAddr(query->getLocalAddr());
@@ -132,14 +148,16 @@ bool Dhcpv6Srv::run() {
                 rsp->setLocalPort(DHCP6_SERVER_PORT);
                 rsp->setIndex(query->getIndex());
                 rsp->setIface(query->getIface());
-                cout << "Replying with:" << rsp->getType() << endl;
-                cout << rsp->toText();
-                cout << "----" << endl;
-                if (!rsp->pack()) {
-                    cout << "Failed to assemble response packet." << endl;
-                    continue;
+
+                LOG_DEBUG(dhcp6_logger, DBG_DHCP6_DETAIL_DATA,
+                          DHCP6_RESPONSE_DATA)
+                          .arg(rsp->getType()).arg(rsp->toText());
+
+                if (rsp->pack()) {
+                    IfaceMgr::instance().send(rsp);
+                } else {
+                    LOG_ERROR(dhcp6_logger, DHCP6_PACK_FAIL);
                 }
-                IfaceMgr::instance().send(rsp);
             }
         }
 
@@ -350,3 +368,46 @@ Pkt6Ptr Dhcpv6Srv::processInfRequest(const Pkt6Ptr& infRequest) {
     Pkt6Ptr reply(new Pkt6(DHCPV6_REPLY, infRequest->getTransid()));
     return reply;
 }
+
+const char*
+Dhcpv6Srv::serverReceivedPacketName(uint8_t type) {
+    static const char* CONFIRM = "CONFIRM";
+    static const char* DECLINE = "DECLINE";
+    static const char* INFORMATION_REQUEST = "INFORMATION_REQUEST";
+    static const char* REBIND = "REBIND";
+    static const char* RELEASE = "RELEASE";
+    static const char* RENEW = "RENEW";
+    static const char* REQUEST = "REQUEST";
+    static const char* SOLICIT = "SOLICIT";
+    static const char* UNKNOWN = "UNKNOWN";
+
+    switch (type) {
+    case DHCPV6_CONFIRM:
+        return (CONFIRM);
+
+    case DHCPV6_DECLINE:
+        return (DECLINE);
+
+    case DHCPV6_INFORMATION_REQUEST:
+        return (INFORMATION_REQUEST);
+
+    case DHCPV6_REBIND:
+        return (REBIND);
+
+    case DHCPV6_RELEASE:
+        return (RELEASE);
+
+    case DHCPV6_RENEW:
+        return (RENEW);
+
+    case DHCPV6_REQUEST:
+        return (REQUEST);
+
+    case DHCPV6_SOLICIT:
+        return (SOLICIT);
+
+    default:
+        ;
+    }
+    return (UNKNOWN);
+}

src/bin/dhcp6/dhcp6_srv.h

@@ -69,6 +69,24 @@ public:
 
     /// @brief Instructs the server to shut down.
     void shutdown();
+
+    /// @brief Return textual type of packet received by server
+    ///
+    /// Returns the name of valid packet received by the server (e.g. DISCOVER).
+    /// If the packet is unknown - or if it is a valid DHCP packet but not one
+    /// expected to be received by the server (such as an OFFER), the string
+    /// "UNKNOWN" is returned.  This methos is used in debug messages.
+    ///
+    /// As the operation of the method does not depend on any server state, it
+    /// is declared static.
+    ///
+    /// @param type DHCPv4 packet type
+    ///
+    /// @return Pointer to "const" string containing the packet name.
+    ///         Note that this string is statically allocated and MUST NOT
+    ///         be freed by the caller.
+    static const char* serverReceivedPacketName(uint8_t type);
+
 protected:
     /// @brief Processes incoming SOLICIT and returns response.
     ///

src/bin/dhcp6/main.cc

@@ -14,13 +14,15 @@
 
 #include <config.h>
 #include <iostream>
-#include <log/dummylog.h>
-#include <log/logger_support.h>
-#include <dhcp6/ctrl_dhcp6_srv.h>
+
 #include <boost/lexical_cast.hpp>
 
-using namespace std;
+#include <dhcp6/ctrl_dhcp6_srv.h>
+#include <dhcp6/dhcp6_log.h>
+#include <log/logger_support.h>
+
 using namespace isc::dhcp;
+using namespace std;
 
 /// This file contains entry point (main() function) for standard DHCPv6 server
 /// component for BIND10 framework. It parses command-line arguments and
@@ -37,11 +39,10 @@ const char* const DHCP6_NAME = "b10-dhcp6";
 
 void
 usage() {
-    cerr << "Usage: b10-dhcp6 [-v]"
-         << endl;
-    cerr << "\t-v: verbose output" << endl;
-    cerr << "\t-s: stand-alone mode (don't connect to BIND10)" << endl;
-    cerr << "\t-p number: specify non-standard port number 1-65535 "
+    cerr << "Usage: " << DHCP6_NAME << " [-v] [-s] [-p number]" << endl;
+    cerr << "  -v: verbose output" << endl;
+    cerr << "  -s: stand-alone mode (don't connect to BIND10)" << endl;
+    cerr << "  -p number: specify non-standard port number 1-65535 "
          << "(useful for testing only)" << endl;
     exit(EXIT_FAILURE);
 }
@@ -52,18 +53,19 @@ main(int argc, char* argv[]) {
     int ch;
     int port_number = DHCP6_SERVER_PORT; // The default. Any other values are
                                          // useful for testing only.
+    bool stand_alone = false;  // Should be connect to BIND10 msgq?
     bool verbose_mode = false; // Should server be verbose?
-    bool stand_alone = false; // should be connect to BIND10 msgq?
 
     while ((ch = getopt(argc, argv, "vsp:")) != -1) {
         switch (ch) {
         case 'v':
             verbose_mode = true;
-            isc::log::denabled = true;
             break;
+
         case 's':
             stand_alone = true;
             break;
+
         case 'p':
             try {
                 port_number = boost::lexical_cast<int>(optarg);
@@ -78,51 +80,45 @@ main(int argc, char* argv[]) {
                 usage();
             }
             break;
-        case ':':
+
         default:
             usage();
         }
     }
 
+    // Check for extraneous parameters.
+    if (argc > optind) {
+        usage();
+    }
+
     // Initialize logging.  If verbose, we'll use maximum verbosity.
     isc::log::initLogger(DHCP6_NAME,
                          (verbose_mode ? isc::log::DEBUG : isc::log::INFO),
                          isc::log::MAX_DEBUG_LEVEL, NULL);
-
-    cout << "b10-dhcp6: My pid=" << getpid() << ", binding to port "
-         << port_number << ", verbose " << (verbose_mode?"yes":"no")
-         << ", stand-alone=" << (stand_alone?"yes":"no") << endl;
-
-    if (argc - optind > 0) {
-        usage();
-    }
+    LOG_INFO(dhcp6_logger, DHCP6_STARTING);
+    LOG_DEBUG(dhcp6_logger, DBG_DHCP6_START, DHCP6_START_INFO)
+              .arg(getpid()).arg(port_number).arg(verbose_mode ? "yes" : "no")
+              .arg(stand_alone ? "yes" : "no" );
 
     int ret = EXIT_SUCCESS;
-
     try {
-
-        cout << "b10-dhcp6: Initiating DHCPv6 server operation." << endl;
-
-        /// @todo: pass verbose to the actual server once logging is implemented
         ControlledDhcpv6Srv server(port_number);
-
         if (!stand_alone) {
             try {
                 server.establishSession();
             } catch (const std::exception& ex) {
-                cerr << "Failed to establish BIND10 session. "
-                    "Running in stand-alone mode:" << ex.what() << endl;
+                LOG_ERROR(dhcp6_logger, DHCP6_SESSION_FAIL).arg(ex.what());
                 // Let's continue. It is useful to have the ability to run 
                 // DHCP server in stand-alone mode, e.g. for testing
             }
         } else {
-            cout << "Skipping connection to the BIND10 msgq." << endl;
+            LOG_DEBUG(dhcp6_logger, DBG_DHCP6_START, DHCP6_STANDALONE);
         }
-
         server.run();
+        LOG_INFO(dhcp6_logger, DHCP6_SHUTDOWN);
 
     } catch (const std::exception& ex) {
-        cerr << "[b10-dhcp6] Server failed: " << ex.what() << endl;
+        LOG_FATAL(dhcp6_logger, DHCP6_SERVER_FAILED).arg(ex.what());
         ret = EXIT_FAILURE;
     }
 

src/bin/dhcp6/tests/Makefile.am

@@ -42,10 +42,13 @@ if HAVE_GTEST
 
 TESTS += dhcp6_unittests
 
-dhcp6_unittests_SOURCES = ../dhcp6_srv.h ../dhcp6_srv.cc ../ctrl_dhcp6_srv.cc
-dhcp6_unittests_SOURCES += dhcp6_unittests.cc
+dhcp6_unittests_SOURCES  = dhcp6_unittests.cc
 dhcp6_unittests_SOURCES += dhcp6_srv_unittest.cc
 dhcp6_unittests_SOURCES += ctrl_dhcp6_srv_unittest.cc
+dhcp6_unittests_SOURCES += ../dhcp6_srv.h ../dhcp6_srv.cc
+dhcp6_unittests_SOURCES += ../dhcp6_log.h ../dhcp6_log.cc
+dhcp6_unittests_SOURCES += ../dhcp6_messages.h ../dhcp6_messages.cc
+dhcp6_unittests_SOURCES += ../ctrl_dhcp6_srv.cc
 
 if USE_CLANGPP
 # Disable unused parameter warning caused by some of the

src/bin/dhcp6/tests/dhcp6_srv_unittest.cc

@@ -223,4 +223,49 @@ TEST_F(Dhcpv6SrvTest, Solicit_basic) {
     // more checks to be implemented
 }
 
+TEST_F(Dhcpv6SrvTest, serverReceivedPacketName) {
+    // Check all possible packet types
+    for (int itype = 0; itype < 256; ++itype) {
+        uint8_t type = itype;
+
+        switch (type) {
+        case DHCPV6_CONFIRM:
+            EXPECT_STREQ("CONFIRM", Dhcpv6Srv::serverReceivedPacketName(type));
+            break;
+
+        case DHCPV6_DECLINE:
+            EXPECT_STREQ("DECLINE", Dhcpv6Srv::serverReceivedPacketName(type));
+            break;
+
+        case DHCPV6_INFORMATION_REQUEST:
+            EXPECT_STREQ("INFORMATION_REQUEST",
+                         Dhcpv6Srv::serverReceivedPacketName(type));
+            break;
+
+        case DHCPV6_REBIND:
+            EXPECT_STREQ("REBIND", Dhcpv6Srv::serverReceivedPacketName(type));
+            break;
+
+        case DHCPV6_RELEASE:
+            EXPECT_STREQ("RELEASE", Dhcpv6Srv::serverReceivedPacketName(type));
+            break;
+
+        case DHCPV6_RENEW: