[3715] Interfaces in the IfaceMgr stored as pointers.

src/bin/dhcp6/dhcp6_srv.cc

@@ -621,8 +621,7 @@ Dhcpv6Srv::generateServerID() {
     const IfaceMgr::IfaceCollection& ifaces = IfaceMgr::instance().getIfaces();
 
     // Let's find suitable interface.
-    for (IfaceMgr::IfaceCollection::const_iterator iface = ifaces.begin();
-         iface != ifaces.end(); ++iface) {
+    BOOST_FOREACH(IfacePtr iface, ifaces) {
         // All the following checks could be merged into one multi-condition
         // statement, but let's keep them separated as perhaps one day
         // we will grow knobs to selectively turn them on or off. Also,

src/bin/dhcp6/tests/config_parser_unittest.cc

@@ -86,7 +86,7 @@ public:
             ADD_FAILURE() << "No interfaces detected.";
         }
 
-        valid_iface_ = ifaces.begin()->getName();
+        valid_iface_ = (*ifaces.begin())->getName();
         bogus_iface_ = "nonexisting0";
 
         if (IfaceMgr::instance().getIface(bogus_iface_)) {

src/bin/dhcp6/tests/dhcp6_test_utils.h

@@ -146,7 +146,7 @@ public:
             ADD_FAILURE() << "No interfaces detected.";
         }
 
-        valid_iface_ = ifaces.begin()->getName();
+        valid_iface_ = (*ifaces.begin())->getName();
     }
 
     // Generate IA_NA or IA_PD option with specified parameters

src/bin/perfdhcp/test_control.cc

-// Copyright (C) 2012-2014 Internet Systems Consortium, Inc. ("ISC")
+// Copyright (C) 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
@@ -57,7 +57,7 @@ TestControl::TestControlSocket::TestControlSocket(const int socket) :
 }
 
 TestControl::TestControlSocket::~TestControlSocket() {
-    Iface* iface = IfaceMgr::instance().getIface(ifindex_);
+    IfacePtr iface = IfaceMgr::instance().getIface(ifindex_);
     if (iface) {
         iface->delSocket(sockfd_);
     }
@@ -65,19 +65,15 @@ TestControl::TestControlSocket::~TestControlSocket() {
 
 void
 TestControl::TestControlSocket::initSocketData() {
-    const IfaceMgr::IfaceCollection& ifaces =
-        IfaceMgr::instance().getIfaces();
-    for (IfaceMgr::IfaceCollection::const_iterator it = ifaces.begin();
-         it != ifaces.end();
-         ++it) {
+    BOOST_FOREACH(IfacePtr iface, IfaceMgr::instance().getIfaces()) {
         const Iface::SocketCollection& socket_collection =
-            it->getSockets();
+            iface->getSockets();
         for (Iface::SocketCollection::const_iterator s =
                  socket_collection.begin();
              s != socket_collection.end();
              ++s) {
             if (s->sockfd_ == sockfd_) {
-                ifindex_ = it->getIndex();
+                ifindex_ = iface->getIndex();
                 addr_ = s->addr_;
                 return;
             }
@@ -784,7 +780,7 @@ TestControl::openSocket() const {
             // If user specified interface name with '-l' the
             // IPV6_MULTICAST_IF has to be set.
             if ((ret >= 0)  && options.isInterface()) {
-                Iface* iface =
+                IfacePtr iface =
                     IfaceMgr::instance().getIface(options.getLocalName());
                 if (iface == NULL) {
                     isc_throw(Unexpected, "unknown interface "
@@ -2050,7 +2046,7 @@ TestControl::setDefaults4(const TestControlSocket& socket,
                           const Pkt4Ptr& pkt) {
     CommandOptions& options = CommandOptions::instance();
     // Interface name.
-    Iface* iface = IfaceMgr::instance().getIface(socket.ifindex_);
+    IfacePtr iface = IfaceMgr::instance().getIface(socket.ifindex_);
     if (iface == NULL) {
         isc_throw(BadValue, "unable to find interface with given index");
     }
@@ -2076,7 +2072,7 @@ TestControl::setDefaults6(const TestControlSocket& socket,
                           const Pkt6Ptr& pkt) {
     CommandOptions& options = CommandOptions::instance();
     // Interface name.
-    Iface* iface = IfaceMgr::instance().getIface(socket.ifindex_);
+    IfacePtr iface = IfaceMgr::instance().getIface(socket.ifindex_);
     if (iface == NULL) {
         isc_throw(BadValue, "unable to find interface with given index");
     }

src/bin/perfdhcp/tests/test_control_unittest.cc

-// Copyright (C) 2012-2013 Internet Systems Consortium, Inc. ("ISC")
+// Copyright (C) 2012-2013,2015 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
@@ -217,11 +217,7 @@ public:
     ///
     /// \return local loopback interface name.
     std::string getLocalLoopback() const {
-        const IfaceMgr::IfaceCollection& ifaces =
-            IfaceMgr::instance().getIfaces();
-        for (IfaceMgr::IfaceCollection::const_iterator iface = ifaces.begin();
-             iface != ifaces.end();
-             ++iface) {
+        BOOST_FOREACH(IfacePtr iface, IfaceMgr::instance().getIfaces()) {
             if (iface->flag_loopback_) {
                 return (iface->getName());
             }

src/lib/dhcp/iface_mgr.cc

@@ -28,6 +28,8 @@
 #include <exceptions/exceptions.h>
 #include <util/io/pktinfo_utilities.h>
 
+#include <boost/foreach.hpp>
+
 #include <cstring>
 #include <errno.h>
 #include <fstream>
@@ -270,16 +272,14 @@ Iface::countActive4() const {
 }
 
 void IfaceMgr::closeSockets() {
-    for (IfaceCollection::iterator iface = ifaces_.begin();
-         iface != ifaces_.end(); ++iface) {
+    BOOST_FOREACH(IfacePtr iface, ifaces_) {
         iface->closeSockets();
     }
 }
 
 void
 IfaceMgr::closeSockets(const uint16_t family) {
-    for (IfaceCollection::iterator iface = ifaces_.begin();
-         iface != ifaces_.end(); ++iface) {
+    BOOST_FOREACH(IfacePtr iface, ifaces_) {
         iface->closeSockets(family);
     }
 }
@@ -372,8 +372,7 @@ IfaceMgr::setPacketFilter(const PktFilter6Ptr& packet_filter) {
 bool
 IfaceMgr::hasOpenSocket(const uint16_t family) const {
     // Iterate over all interfaces and search for open sockets.
-    for (IfaceCollection::const_iterator iface = ifaces_.begin();
-         iface != ifaces_.end(); ++iface) {
+    BOOST_FOREACH(IfacePtr iface, ifaces_) {
         const Iface::SocketCollection& sockets = iface->getSockets();
         for (Iface::SocketCollection::const_iterator sock = sockets.begin();
              sock != sockets.end(); ++sock) {
@@ -391,8 +390,7 @@ IfaceMgr::hasOpenSocket(const uint16_t family) const {
 bool
 IfaceMgr::hasOpenSocket(const IOAddress& addr) const {
     // Iterate over all interfaces and search for open sockets.
-    for (IfaceCollection::const_iterator iface = ifaces_.begin();
-         iface != ifaces_.end(); ++iface) {
+    BOOST_FOREACH(IfacePtr iface, ifaces_) {
         const Iface::SocketCollection& sockets = iface->getSockets();
         for (Iface::SocketCollection::const_iterator sock = sockets.begin();
              sock != sockets.end(); ++sock) {
@@ -439,21 +437,21 @@ void IfaceMgr::stubDetectIfaces() {
                   "Interface detection on this OS is not supported.");
     }
 
-    Iface iface(ifaceName, if_nametoindex(ifaceName.c_str()));
-    iface.flag_up_ = true;
-    iface.flag_running_ = true;
+    IfacePtr iface(new Iface(ifaceName, if_nametoindex(ifaceName.c_str())));
+    iface->flag_up_ = true;
+    iface->flag_running_ = true;
 
     // Note that we claim that this is not a loopback. iface_mgr tries to open a
     // socket on all interaces that are up, running and not loopback. As this is
     // the only interface we were able to detect, let's pretend this is a normal
     // interface.
-    iface.flag_loopback_ = false;
-    iface.flag_multicast_ = true;
-    iface.flag_broadcast_ = true;
-    iface.setHWType(HWTYPE_ETHERNET);
+    iface->flag_loopback_ = false;
+    iface->flag_multicast_ = true;
+    iface->flag_broadcast_ = true;
+    iface->setHWType(HWTYPE_ETHERNET);
 
-    iface.addAddress(IOAddress(v4addr));
-    iface.addAddress(IOAddress(v6addr));
+    iface->addAddress(IOAddress(v4addr));
+    iface->addAddress(IOAddress(v6addr));
     addInterface(iface);
 }
 
@@ -463,10 +461,7 @@ IfaceMgr::openSockets4(const uint16_t port, const bool use_bcast,
     int count = 0;
     int bcast_num = 0;
 
-    for (IfaceCollection::iterator iface = ifaces_.begin();
-         iface != ifaces_.end();
-         ++iface) {
-
+    BOOST_FOREACH(IfacePtr iface, ifaces_) {
         // If the interface is inactive, there is nothing to do. Simply
         // proceed to the next detected interface.
         if (iface->inactive4_) {
@@ -577,10 +572,7 @@ IfaceMgr::openSockets6(const uint16_t port,
                        IfaceMgrErrorMsgCallback error_handler) {
     int count = 0;
 
-    for (IfaceCollection::iterator iface = ifaces_.begin();
-         iface != ifaces_.end();
-         ++iface) {
-
+    BOOST_FOREACH(IfacePtr iface, ifaces_) {
         if (iface->inactive6_) {
             continue;
 
@@ -658,10 +650,7 @@ IfaceMgr::openSockets6(const uint16_t port,
 
 void
 IfaceMgr::printIfaces(std::ostream& out /*= std::cout*/) {
-    for (IfaceCollection::const_iterator iface=ifaces_.begin();
-         iface!=ifaces_.end();
-         ++iface) {
-
+    BOOST_FOREACH(IfacePtr iface, ifaces_) {
         const Iface::AddressCollection& addrs = iface->getAddresses();
 
         out << "Detected interface " << iface->getFullName()
@@ -684,28 +673,24 @@ IfaceMgr::printIfaces(std::ostream& out /*= std::cout*/) {
     }
 }
 
-Iface*
+IfacePtr
 IfaceMgr::getIface(int ifindex) {
-    for (IfaceCollection::iterator iface=ifaces_.begin();
-         iface!=ifaces_.end();
-         ++iface) {
+    BOOST_FOREACH(IfacePtr iface, ifaces_) {
         if (iface->getIndex() == ifindex)
-            return (&(*iface));
+            return (iface);
     }
 
-    return (NULL); // not found
+    return (IfacePtr()); // not found
 }
 
-Iface*
+IfacePtr
 IfaceMgr::getIface(const std::string& ifname) {
-    for (IfaceCollection::iterator iface=ifaces_.begin();
-         iface!=ifaces_.end();
-         ++iface) {
+    BOOST_FOREACH(IfacePtr iface, ifaces_) {
         if (iface->getName() == ifname)
-            return (&(*iface));
+            return (iface);
     }
 
-    return (NULL); // not found
+    return (IfacePtr()); // not found
 }
 
 void
@@ -715,8 +700,7 @@ IfaceMgr::clearIfaces() {
 
 void
 IfaceMgr::clearUnicasts() {
-    for (IfaceCollection::iterator iface=ifaces_.begin();
-         iface!=ifaces_.end(); ++iface) {
+    BOOST_FOREACH(IfacePtr iface, ifaces_) {
         iface->clearUnicasts();
     }
 }
@@ -724,7 +708,7 @@ IfaceMgr::clearUnicasts() {
 int IfaceMgr::openSocket(const std::string& ifname, const IOAddress& addr,
                          const uint16_t port, const bool receive_bcast,
                          const bool send_bcast) {
-    Iface* iface = getIface(ifname);
+    IfacePtr iface = getIface(ifname);
     if (!iface) {
         isc_throw(BadValue, "There is no " << ifname << " interface present.");
     }
@@ -744,10 +728,7 @@ int IfaceMgr::openSocketFromIface(const std::string& ifname,
                                   const uint16_t port,
                                   const uint8_t family) {
     // Search for specified interface among detected interfaces.
-    for (IfaceCollection::iterator iface = ifaces_.begin();
-         iface != ifaces_.end();
-         ++iface) {
-
+    BOOST_FOREACH(IfacePtr iface, ifaces_) {
         if ((iface->getFullName() != ifname) &&
             (iface->getName() != ifname)) {
             continue;
@@ -788,10 +769,7 @@ int IfaceMgr::openSocketFromAddress(const IOAddress& addr,
                                     const uint16_t port) {
     // Search through detected interfaces and addresses to match
     // local address we got.
-    for (IfaceCollection::iterator iface = ifaces_.begin();
-         iface != ifaces_.end();
-         ++iface) {
-
+    BOOST_FOREACH(IfacePtr iface, ifaces_) {
         Iface::AddressCollection addrs = iface->getAddresses();
 
         for (Iface::AddressCollection::iterator addr_it = addrs.begin();
@@ -898,7 +876,7 @@ IfaceMgr::openSocket4(Iface& iface, const IOAddress& addr,
 
 bool
 IfaceMgr::send(const Pkt6Ptr& pkt) {
-    Iface* iface = getIface(pkt->getIface());
+    IfacePtr iface = getIface(pkt->getIface());
     if (!iface) {
         isc_throw(BadValue, "Unable to send DHCPv6 message. Invalid interface ("
                   << pkt->getIface() << ") specified.");
@@ -911,7 +889,7 @@ IfaceMgr::send(const Pkt6Ptr& pkt) {
 bool
 IfaceMgr::send(const Pkt4Ptr& pkt) {
 
-    Iface* iface = getIface(pkt->getIface());
+    IfacePtr iface = getIface(pkt->getIface());
     if (!iface) {
         isc_throw(BadValue, "Unable to send DHCPv4 message. Invalid interface ("
                   << pkt->getIface() << ") specified.");
@@ -930,7 +908,7 @@ IfaceMgr::receive4(uint32_t timeout_sec, uint32_t timeout_usec /* = 0 */) {
                   " one million microseconds");
     }
     const SocketInfo* candidate = 0;
-    IfaceCollection::iterator iface;
+    IfacePtr iface;
     fd_set sockets;
     int maxfd = 0;
 
@@ -939,8 +917,7 @@ IfaceMgr::receive4(uint32_t timeout_sec, uint32_t timeout_usec /* = 0 */) {
     /// @todo: marginal performance optimization. We could create the set once
     /// and then use its copy for select(). Please note that select() modifies
     /// provided set to indicated which sockets have something to read.
-    for (iface = ifaces_.begin(); iface != ifaces_.end(); ++iface) {
-
+    BOOST_FOREACH(iface, ifaces_) {
         const Iface::SocketCollection& socket_collection = iface->getSockets();
         for (Iface::SocketCollection::const_iterator s = socket_collection.begin();
              s != socket_collection.end(); ++s) {
@@ -1013,7 +990,7 @@ IfaceMgr::receive4(uint32_t timeout_sec, uint32_t timeout_usec /* = 0 */) {
     }
 
     // Let's find out which interface/socket has the data
-    for (iface = ifaces_.begin(); iface != ifaces_.end(); ++iface) {
+    BOOST_FOREACH(iface, ifaces_) {
         const Iface::SocketCollection& socket_collection = iface->getSockets();
         for (Iface::SocketCollection::const_iterator s = socket_collection.begin();
              s != socket_collection.end(); ++s) {
@@ -1052,8 +1029,7 @@ Pkt6Ptr IfaceMgr::receive6(uint32_t timeout_sec, uint32_t timeout_usec /* = 0 */
     /// @todo: marginal performance optimization. We could create the set once
     /// and then use its copy for select(). Please note that select() modifies
     /// provided set to indicated which sockets have something to read.
-    IfaceCollection::const_iterator iface;
-    for (iface = ifaces_.begin(); iface != ifaces_.end(); ++iface) {
+    BOOST_FOREACH(IfacePtr iface, ifaces_) {
         const Iface::SocketCollection& socket_collection = iface->getSockets();
         for (Iface::SocketCollection::const_iterator s = socket_collection.begin();
              s != socket_collection.end(); ++s) {
@@ -1128,7 +1104,7 @@ Pkt6Ptr IfaceMgr::receive6(uint32_t timeout_sec, uint32_t timeout_usec /* = 0 */
     }
 
     // Let's find out which interface/socket has the data
-    for (iface = ifaces_.begin(); iface != ifaces_.end(); ++iface) {
+    BOOST_FOREACH(IfacePtr iface, ifaces_) {
         const Iface::SocketCollection& socket_collection = iface->getSockets();
         for (Iface::SocketCollection::const_iterator s = socket_collection.begin();
              s != socket_collection.end(); ++s) {
@@ -1150,8 +1126,8 @@ Pkt6Ptr IfaceMgr::receive6(uint32_t timeout_sec, uint32_t timeout_usec /* = 0 */
 }
 
 uint16_t IfaceMgr::getSocket(const isc::dhcp::Pkt6& pkt) {
-    Iface* iface = getIface(pkt.getIface());
-    if (iface == NULL) {
+    IfacePtr iface = getIface(pkt.getIface());
+    if (!iface) {
         isc_throw(IfaceNotFound, "Tried to find socket for non-existent interface");
     }
 
@@ -1207,7 +1183,7 @@ uint16_t IfaceMgr::getSocket(const isc::dhcp::Pkt6& pkt) {
 
 SocketInfo
 IfaceMgr::getSocket(isc::dhcp::Pkt4 const& pkt) {
-    Iface* iface = getIface(pkt.getIface());
+    IfacePtr iface = getIface(pkt.getIface());
     if (iface == NULL) {
         isc_throw(IfaceNotFound, "Tried to find socket for non-existent interface");
     }

src/lib/dhcp/iface_mgr.h

@@ -159,7 +159,7 @@ struct SocketInfo {
 /// returned by the OS kernel when the socket is opened. Hence, it is
 /// convenient to allocate the buffer when the socket is being opened and
 /// utilze it throughout the lifetime of the socket.
-class Iface {
+class Iface : public boost::noncopyable {
 public:
 
     /// Maximum MAC address length (Infiniband uses 20 bytes)
@@ -500,6 +500,8 @@ private:
     std::vector<uint8_t> read_buffer_;
 };
 
+typedef boost::shared_ptr<Iface> IfacePtr;
+
 /// @brief This type describes the callback function invoked when error occurs
 /// in the IfaceMgr.
 ///
@@ -544,7 +546,7 @@ public:
     //      also hide it (make it public make tests easier for now)
 
     /// Type that holds a list of interfaces.
-    typedef std::list<Iface> IfaceCollection;
+    typedef std::list<IfacePtr> IfaceCollection;
 
     /// IfaceMgr is a singleton class. This method returns reference
     /// to its sole instance.
@@ -589,7 +591,7 @@ public:
     /// @return interface with requested index (or NULL if no such
     ///         interface is present)
     ///
-    Iface* getIface(int ifindex);
+    IfacePtr getIface(int ifindex);
 
     /// @brief Returns interface with specified interface name
     ///
@@ -598,7 +600,7 @@ public:
     /// @return interface with requested name (or NULL if no such
     ///         interface is present)
     ///
-    Iface* getIface(const std::string& ifname);
+    IfacePtr getIface(const std::string& ifname);
 
     /// @brief Returns container with all interfaces.
     ///
@@ -1031,7 +1033,7 @@ public:
     /// @param iface reference to Iface object.
     /// @note This function must be public because it has to be callable
     /// from unit tests.
-    void addInterface(const Iface& iface) {
+    void addInterface(const IfacePtr& iface) {
         ifaces_.push_back(iface);
     }
 

src/lib/dhcp/iface_mgr_bsd.cc

@@ -47,9 +47,9 @@ IfaceMgr::detectIfaces() {
         isc_throw(Unexpected, "Network interfaces detection failed.");
     }
 
-    typedef map<string, Iface> ifaceLst;
-    ifaceLst::iterator iface_iter;
-    ifaceLst ifaces;
+    typedef map<string, IfacePtr> IfaceLst;
+    IfaceLst::iterator iface_iter;
+    IfaceLst ifaces;
 
     // First lookup for getting interfaces ...
     for (ifptr = iflist; ifptr != 0; ifptr = ifptr->ifa_next) {
@@ -66,9 +66,9 @@ IfaceMgr::detectIfaces() {
             continue;
         }
 
-        Iface iface(ifname, ifindex);
-        iface.setFlags(ifptr->ifa_flags);
-        ifaces.insert(pair<string, Iface>(ifname, iface));
+        IfacePtr iface(new Iface(ifname, ifindex));
+        iface->setFlags(ifptr->ifa_flags);
+        ifaces.insert(pair<string, IfacePtr>(ifname, iface));
     }
 
     // Second lookup to get MAC and IP addresses
@@ -84,8 +84,8 @@ IfaceMgr::detectIfaces() {
                 reinterpret_cast<struct sockaddr_dl *>(ifptr->ifa_addr);
             ptr = reinterpret_cast<uint8_t *>(LLADDR(ldata));
 
-            iface_iter->second.setHWType(ldata->sdl_type);
-            iface_iter->second.setMac(ptr, ldata->sdl_alen);
+            iface_iter->second->setHWType(ldata->sdl_type);
+            iface_iter->second->setMac(ptr, ldata->sdl_alen);
         } else if(ifptr->ifa_addr->sa_family == AF_INET6) {
             // IPv6 Addr
             struct sockaddr_in6 * adata =
@@ -93,7 +93,7 @@ IfaceMgr::detectIfaces() {
             ptr = reinterpret_cast<uint8_t *>(&adata->sin6_addr);
 
             IOAddress a = IOAddress::fromBytes(AF_INET6, ptr);
-            iface_iter->second.addAddress(a);
+            iface_iter->second->addAddress(a);
         } else {
             // IPv4 Addr
             struct sockaddr_in * adata =
@@ -101,16 +101,16 @@ IfaceMgr::detectIfaces() {
             ptr = reinterpret_cast<uint8_t *>(&adata->sin_addr);
 
             IOAddress a = IOAddress::fromBytes(AF_INET, ptr);
-            iface_iter->second.addAddress(a);
+            iface_iter->second->addAddress(a);
         }
     }
 
     freeifaddrs(iflist);
 
     // Interfaces registering
-    for(ifaceLst::const_iterator iface_iter = ifaces.begin();
+    for(IfaceLst::const_iterator iface_iter = ifaces.begin();
         iface_iter != ifaces.end(); ++iface_iter) {
-        ifaces_.push_back(iface_iter->second);
+        addInterface(iface_iter->second);
     }
 }
 

src/lib/dhcp/pkt.cc

@@ -257,7 +257,7 @@ Pkt::getMACFromIPv6(const isc::asiolink::IOAddress& addr) {
 
     // Let's get the interface this packet was received on. We need it to get
     // hardware type
-    Iface* iface = IfaceMgr::instance().getIface(iface_);
+    IfacePtr iface = IfaceMgr::instance().getIface(iface_);
     uint16_t hwtype = 0; // not specified
     if (iface) {
         hwtype = iface->getHWType();

src/lib/dhcp/pkt6.cc

@@ -706,7 +706,7 @@ Pkt6::getMACFromRemoteIdRelayOption() {
 
         // Let's get the interface this packet was received on. We need it to get
         // the hardware type.
-        Iface* iface = IfaceMgr::instance().getIface(iface_);
+        IfacePtr iface = IfaceMgr::instance().getIface(iface_);
         uint16_t hwtype = 0; // not specified
 
         // If we get the interface HW type, great! If not, let's not panic.

src/lib/dhcp/pkt_filter_inet6.cc

@@ -224,7 +224,7 @@ PktFilterInet6::receive(const SocketInfo& socket_info) {
     pkt->setRemotePort(ntohs(from.sin6_port));
     pkt->setIndex(ifindex);
 
-    Iface* received = IfaceMgr::instance().getIface(pkt->getIndex());
+    IfacePtr received = IfaceMgr::instance().getIface(pkt->getIndex());
     if (received) {
         pkt->setIface(received->getName());
     } else {

src/lib/dhcp/tests/iface_mgr_test_config.cc

@@ -52,8 +52,8 @@ IfaceMgrTestConfig::~IfaceMgrTestConfig() {
 void
 IfaceMgrTestConfig::addAddress(const std::string& iface_name,
                                const IOAddress& address) {
-    Iface* iface = IfaceMgr::instance().getIface(iface_name);
-    if (iface == NULL) {
+    IfacePtr iface = IfaceMgr::instance().getIface(iface_name);
+    if (!iface) {
         isc_throw(isc::BadValue, "interface '" << iface_name
                   << "' doesn't exist");
     }
@@ -61,7 +61,7 @@ IfaceMgrTestConfig::addAddress(const std::string& iface_name,
 }
 
 void
-IfaceMgrTestConfig::addIface(const Iface& iface) {
+IfaceMgrTestConfig::addIface(const IfacePtr& iface) {
     IfaceMgr::instance().addInterface(iface);
 }
 
@@ -70,27 +70,27 @@ IfaceMgrTestConfig::addIface(const std::string& name, const int ifindex) {
     IfaceMgr::instance().addInterface(createIface(name, ifindex));
 }
 
-Iface
+IfacePtr
 IfaceMgrTestConfig::createIface(const std::string &name, const int ifindex) {
-    Iface iface(name, ifindex);
+    IfacePtr iface(new Iface(name, ifindex));
     if (name == "lo") {
-        iface.flag_loopback_ = true;
+        iface->flag_loopback_ = true;
         // Don't open sockets on the loopback interface.
-        iface.inactive4_ = true;
-        iface.inactive6_ = true;
+        iface->inactive4_ = true;
+        iface->inactive6_ = true;
     } else {
-        iface.inactive4_ = false;
-        iface.inactive6_ = false;
+        iface->inactive4_ = false;
+        iface->inactive6_ = false;
     }
-    iface.flag_multicast_ = true;
+    iface->flag_multicast_ = true;
     // On BSD systems, the SO_BINDTODEVICE option is not supported.
     // Therefore the IfaceMgr will throw an exception on attempt to
     // open sockets on more than one broadcast-capable interface at
     // the same time. In order to prevent this error, we mark all
     // interfaces broadcast-incapable for unit testing.
-    iface.flag_broadcast_ = false;
-    iface.flag_up_ = true;
-    iface.flag_running_ = true;
+    iface->flag_broadcast_ = false;
+    iface->flag_up_ = true;
+    iface->flag_running_ = true;
     return (iface);
 }
 
@@ -132,7 +132,7 @@ IfaceMgrTestConfig::setIfaceFlags(const std::string& name,
                                   const FlagRunning& running,
                                   const FlagInactive4& inactive4,
                                   const FlagInactive6& inactive6) {
-    Iface* iface = IfaceMgr::instance().getIface(name);
+    IfacePtr iface = IfaceMgr::instance().getIface(name);
     if (iface == NULL) {
         isc_throw(isc::BadValue, "interface '" << name << "' doesn't exist");
     }
@@ -146,7 +146,7 @@ IfaceMgrTestConfig::setIfaceFlags(const std::string& name,
 bool
 IfaceMgrTestConfig::socketOpen(const std::string& iface_name,
                                const int family) const {
-    Iface* iface = IfaceMgr::instance().getIface(iface_name);
+    IfacePtr iface = IfaceMgr::instance().getIface(iface_name);
     if (iface == NULL) {
         isc_throw(Unexpected, "No such interface '" << iface_name << "'");
     }
@@ -164,8 +164,8 @@ IfaceMgrTestConfig::socketOpen(const std::string& iface_name,
 bool
 IfaceMgrTestConfig::socketOpen(const std::string& iface_name,
                                const std::string& address) const {
-    Iface* iface = IfaceMgr::instance().getIface(iface_name);
-    if (iface == NULL) {