diff --git a/Makefile.am b/Makefile.am
index f5be2fb0..987c9b29 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -9,9 +9,11 @@ bin_PROGRAMS=ipfixprobe ipfixprobe_stats
 
 DISTCHECK_CONFIGURE_FLAGS="--with-systemdsystemunitdir=$$dc_install_base/$(systemdsystemunitdir)"
 
+AM_CPPFLAGS=-I$(srcdir)/include/
+
 ipfixprobe_LDFLAGS=-lpthread -ldl -latomic
 ipfixprobe_CFLAGS=-I$(srcdir)/include/ -fPIC
-ipfixprobe_CXXFLAGS=-std=gnu++11 -Wno-write-strings -I$(srcdir)/include/ -fPIC
+ipfixprobe_CXXFLAGS=-Wno-write-strings -I$(srcdir)/include/ -fPIC
 
 if OS_CYGWIN
 ipfixprobe_CXXFLAGS+=-Wl,--export-all-symbols
@@ -32,6 +34,11 @@ ipfixprobe_input_src=\
 #example_la_SOURCES=example.cpp example.hpp
 #example_la_LDFLAGS=-module -shared -avoid-version
 
+if ENABLE_PCAP
+pkglib_LTLIBRARIES=input-pcap.la
+input_pcap_la_SOURCES= input/pcap.cpp input/pcap.hpp
+input_pcap_la_LDFLAGS=-module -shared -avoid-version -lpcap
+endif
 
 if WITH_NDP
 ipfixprobe_LDFLAGS+=-lnuma -lndpRI -L$(srcdir)/input/nfbCInterface/
@@ -39,6 +46,12 @@ ipfixprobe_CXXFLAGS+=-I$(srcdir)/input/nfbCInterface/include/
 ipfixprobe_input_src+=\
 		input/ndp.cpp \
 		input/ndp.hpp
+
+pkglib_LTLIBRARIES=input-ndp.la
+input_ndp_la_CXXFLAGS=-I$(srcdir)/input/nfbCInterface/include/
+input_ndp_la_SOURCES= input/ndp.cpp input/ndp.hpp
+input_ndp_la_LDFLAGS=-module -shared -avoid-version -lnuma -lndpRI -L$(srcdir)/input/nfbCInterface/
+
 endif
 
 if WITH_RAW
@@ -156,6 +169,12 @@ if WITH_DPDK
 ipfixprobe_input_src+=\
         input/dpdk.cpp \
         input/dpdk.h
+
+pkglib_LTLIBRARIES=input-dpdk.la
+input_dpdk_la_CFLAGS=-I$(srcdir)/include/ $(DPDK_CFLAGS)
+input_dpdk_la_CXXFLAGS=$(DPDK_CFLAGS)
+input_dpdk_la_SOURCES=input/dpdk.cpp input/dpdk.h
+input_dpdk_la_LDFLAGS=-module -shared -avoid-version $(DPDK_LIBS)
 endif
 
 ipfixprobe_headers_src=\
@@ -200,7 +219,7 @@ endif
 
 ipfixprobe_SOURCES=$(ipfixprobe_src) main.cpp
 
-ipfixprobe_stats_CXXFLAGS=-std=gnu++11 -Wno-write-strings -I$(srcdir)/include/
+ipfixprobe_stats_CXXFLAGS=-Wno-write-strings
 ipfixprobe_stats_SOURCES=ipfixprobe_stats.cpp \
 		include/ipfixprobe/options.hpp \
 		include/ipfixprobe/utils.hpp \
@@ -268,6 +287,8 @@ srpm:
 	make ${AM_MAKEFLAGS} distdir='$(RPMDIR)/SOURCES/$(RPMFILENAME)' distdir
 	( cd "$(RPMDIR)/SOURCES/"; tar -z -c -f $(RPMFILENAME)-$(RELEASE).tar.gz $(RPMFILENAME); rm -rf $(RPMFILENAME); )
 	$(RPMBUILD) -bs $(PACKAGE_NAME).spec --define "_topdir `pwd`/$(RPMDIR)";
+	$(RPMBUILD) -bs $(PACKAGE_NAME)-dpdk.spec --define "_topdir `pwd`/$(RPMDIR)";
+	$(RPMBUILD) -bs $(PACKAGE_NAME)-ndp.spec --define "_topdir `pwd`/$(RPMDIR)";
 
 .PHONY: rpm
 rpm: srpm
@@ -279,7 +300,11 @@ rpm-nemea: srpm
 
 .PHONY: rpm-ndp
 rpm-ndp: srpm
-	$(RPMBUILD) --define "_topdir `pwd`/$(RPMDIR)" --rebuild $(RPMDIR)/SRPMS/$(RPMFILENAME)-$(RELEASE).src.rpm --with ndp --with unwind;
+	$(RPMBUILD) --define "_topdir `pwd`/$(RPMDIR)" --rebuild $(RPMDIR)/SRPMS/$(PACKAGE_NAME)-ndp-$(VERSION)-$(RELEASE).src.rpm --with unwind;
+
+.PHONY: rpm-dpdk
+rpm-dpdk: srpm
+	$(RPMBUILD) --define "_topdir `pwd`/$(RPMDIR)" --rebuild $(RPMDIR)/SRPMS/$(PACKAGE_NAME)-dpdk-$(VERSION)-$(RELEASE).src.rpm --with unwind;
 else
 endif
 
diff --git a/configure.ac b/configure.ac
index 1f9166d0..96f90ced 100644
--- a/configure.ac
+++ b/configure.ac
@@ -20,16 +20,17 @@ RPM_BUILDREQ=
 
 AC_CONFIG_MACRO_DIR([m4])
 # Must be checked before default -g -O2 is set:
+CXXFLAGS=" -std=gnu++11 "
 AC_ARG_ENABLE([debug],
         AC_HELP_STRING([--enable-debug],
         [Enable build with debug symbols and without optimizations.]),
         [if test "$enableval" = "yes"; then
-              CXXFLAGS="-Wall -g -O0 $CXXFLAGS"
+              CXXFLAGS+="-Wall -g -O0 $CXXFLAGS"
               CFLAGS="-Wall -g -O0 $CFLAGS"
          else
-              CXXFLAGS="-Wall -g -O3 $CXXFLAGS"
+              CXXFLAGS+="-Wall -g -O3 $CXXFLAGS"
               CFLAGS="-Wall -g -O3 $CFLAGS"
-        fi], [CXXFLAGS="-Wall -g -O3 $CXXFLAGS"
+        fi], [CXXFLAGS+="-Wall -g -O3 $CXXFLAGS"
               CPPFLAGS="-DNDEBUG=1 $CPPFLAGS"
               CFLAGS="-Wall -g -O3"])
 AM_CONDITIONAL(DEBUG, test x"$debug" = x"true")
@@ -81,6 +82,9 @@ AC_ARG_WITH([defaultsocketdir],
 AC_SUBST([defaultsocketdir], [$with_defaultsocketdir])
 AC_DEFINE_DIR([DEFAULTSOCKETDIR], [defaultsocketdir], [Default path to socket directory])
 
+pkglibdir=$libdir/ipfixprobe
+AC_DEFINE_DIR([PLUGINDIR], [pkglibdir], [Path to loadable plugins])
+
 AC_CHECK_LIB(atomic, __atomic_store, [libatomic=yes], AC_MSG_ERROR([libatomic not found]))
 
 ### gtest
@@ -206,7 +210,7 @@ if test x${withndp} = xyes; then
         ), AC_MSG_ERROR([nfb/nfb.h not found. Try installing netcope-common-devel]))
 fi
 
-AM_CONDITIONAL(WITH_NDP,  test x${libnfb} = xyes && test x${withndp} = xyes)
+AM_CONDITIONAL(WITH_NDP,  test x${libnfb} = xyes -a x${withndp} = xyes)
 if [[ -z "$WITH_NDP_TRUE" ]]; then
    AC_DEFINE([WITH_NDP], [1], [Define to 1 if the ndp is available])
    CPPFLAGS="$CPPFLAGS -DIPXP_FLOW_CACHE_SIZE=19 -DIPXP_FLOW_LINE_SIZE=2" # 524288 cache records, 4 record per line
@@ -225,31 +229,47 @@ AC_ARG_WITH([pcap],
       fi
         ], [withpcap="no"]
 )
-
-if test x${withpcap} = xyes; then
-   AC_CHECK_HEADER(pcap.h,
-              AC_CHECK_LIB(pcap, pcap_open_live, [libpcap=yes],
-                           AC_CHECK_LIB(wpcap, pcap_open_live, [libwpcap=yes], AC_MSG_ERROR([libpcap not found. Try installing libpcap]))),
-                           AC_MSG_ERROR([pcap.h not found. Try installing libpcap-devel or libwpcap-devel]))
+AC_ARG_ENABLE([pcap-plugin],
+        AC_HELP_STRING([--disable-pcap-plugin],
+        [Disable build of input-pcap plugin.]),
+        [if test "$enableval" = "yes"; then
+              disablepcapplugin=no
+         else
+              disablepcapplugin=yes
+         fi], [disablepcapplugin=no])
+AM_CONDITIONAL(DISABLE_PCAP_MODULE, test x"$disablepcapplugin" = x"yes")
+
+BACKUPLIBS=$LIBS
+AC_CHECK_HEADER(pcap.h,
+           AC_CHECK_LIB(pcap, pcap_open_live, [libpcap=yes
+           have_pcap=yes],
+                        AC_CHECK_LIB(wpcap, pcap_open_live, [libwpcap=yes
+                        have_pcap=yes], [AC_MSG_WARN([libpcap not found. Try installing libpcap])
+                        have_pcap=no])),
+                        [AC_MSG_WARN([pcap.h not found. Try installing libpcap-devel or libwpcap-devel])
+                        have_pcap=no])
+
+if test x${withpcap} = xyes -a x${have_pcap} = xno; then
+   AC_MSG_ERROR([Cannot compile pcap plugin that was enabled by --with-pcap.])
 fi
 
-AM_CONDITIONAL(WITH_PCAP, test x${withpcap} && (test x${libpcap} = xyes || test x${libwpcap} = xyes))
-if [[ -z "$WITH_PCAP_TRUE" ]]; then
+AM_CONDITIONAL(ENABLE_PCAP, test x${have_pcap} = xyes -a x${disablepcapplugin} = xno)
+AM_CONDITIONAL(WITH_PCAP, test x${withpcap} = xyes -a x${have_pcap} = xyes)
+if test x${withpcap} = xyes -a x${have_pcap} = xyes; then
    AC_DEFINE([WITH_PCAP], [1], [Define to 1 if the libpcap is available])
-   if [[ -z "$WITH_PCAP_TRUE" ]]; then
-      if test x${libpcap} = xyes; then
-         LIBS="-lpcap $LIBS"
-         RPM_REQUIRES+=" libpcap"
-         RPM_BUILDREQ+=" libpcap-devel"
-      else
-         LIBS="-lwpcap $LIBS"
-         RPM_REQUIRES+=" libwpcap"
-         RPM_BUILDREQ+=" libwpcap-devel"
-      fi
+   if test x${libpcap} = xyes; then
+      LIBS="-lpcap $LIBS"
+      RPM_REQUIRES+=" libpcap"
+      RPM_BUILDREQ+=" libpcap-devel"
+   else
+      LIBS="-lwpcap $LIBS"
+      RPM_REQUIRES+=" libwpcap"
+      RPM_BUILDREQ+=" libwpcap-devel"
    fi
+else
+   LIBS=$BACKUPLIBS
 fi
 
-
 AC_ARG_WITH([unwind],
         AC_HELP_STRING([--with-unwind],[Compile ipfixprobe with libunwind to print stack on crash]),
         [
@@ -375,7 +395,7 @@ AM_CONDITIONAL(WITH_STEM, test x${withstem} = xyes)
 if [[ -z "$WITH_STEM_TRUE" ]]; then
    AC_DEFINE([WITH_STEM], [1], [Define to 1 to use flexprobe testing interface])
    CFLAGS="-I/usr/local/include/Stem $CFLAGS"
-   CXXFLAGS="-I/usr/local/include/Stem -std=gnu++17 -g -Wno-write-strings $CXXFLAGS"
+   CXXFLAGS="-I/usr/local/include/Stem -g -Wno-write-strings $CXXFLAGS"
    LIBS="-lstem $LIBS"
 fi
 
@@ -436,6 +456,8 @@ fi
 
 AC_CONFIG_FILES([Makefile
                  ipfixprobe.spec
+                 ipfixprobe-dpdk.spec
+                 ipfixprobe-ndp.spec
                  ipfixprobe.bash
                  input/nfbCInterface/Makefile
                  init/Makefile
@@ -472,6 +494,12 @@ echo "  LIBS...................: $LIBS"
 echo "Enforced NEMEA (for copr): $COPRRPM"
 echo "FlexProbe Data Interface.: $withflexprobe"
 echo "DPDK Interface...........: $withdpdk"
+echo "pcap Interface...........: $withpcap"
+if test -n "$ENABLE_PCAP_TRUE"; then
+echo "   pcap module...........: no"
+else
+echo "   pcap module...........: yes"
+fi
 echo
 echo "Installation.............: make install (as root if needed, with 'su' or 'sudo')"
 echo "  prefix.................: $prefix"
diff --git a/ipfixprobe-dpdk.spec.in b/ipfixprobe-dpdk.spec.in
new file mode 100644
index 00000000..c776e057
--- /dev/null
+++ b/ipfixprobe-dpdk.spec.in
@@ -0,0 +1,109 @@
+%bcond_without raw
+%bcond_with nemea
+%bcond_with unwind
+%bcond_with is_el7
+
+%if %{with raw}
+%global compile_raw yes
+%else
+%global compile_raw no
+%endif
+
+%if %{with nemea}
+%global compile_nemea yes
+%else
+%global compile_nemea @COPRRPM@
+%endif
+
+%if %{with unwind}
+%global compile_unwind yes
+%else
+%global compile_unwind @COPRRPM@
+%endif
+
+%if "%{dist}" == ".el7"
+%global is_el7 yes
+%else
+%global is_el7 no
+%endif
+
+Name: ipfixprobe-dpdk
+Version: @PACKAGE_VERSION@
+Release: @RELEASE@
+URL: http://nemea.liberouter.org/
+Source: https://www.liberouter.org/repo/SOURCES/ipfixprobe-%{version}-%{release}.tar.gz
+Group: Liberouter
+License: BSD
+Vendor: CESNET, z.s.p.o.
+Packager: @USERNAME@ <@USERMAIL@>
+BuildRoot: %{_tmppath}/ipfixprobe-%{version}-%{release}
+Summary: IPFIX flow exporter with DPDK support and various extending IPFIX elements exported by plugins.
+Requires: libatomic
+BuildRequires: gcc gcc-c++ make doxygen pkgconfig libatomic
+Provides: ipfixprobe
+Requires: dpdk
+BuildRequires: dpdk-devel
+
+%if %{with nemea} || "@COPRRPM@" == "yes"
+Requires: libtrap
+BuildRequires: libtrap-devel
+BuildRequires: unirec
+%endif
+
+%if %{with unwind} || "@COPRRPM@" == "yes"
+Requires: libunwind
+BuildRequires: libunwind-devel
+%endif
+
+%if "%{is_el7}" == "yes"
+Requires: openssl11
+BuildRequires: openssl11-devel
+%else
+Requires: openssl
+BuildRequires: openssl-devel
+%endif
+
+%description
+This package contains IPFIX flow exporter with DPDK support.
+
+%package -n ipfixprobe-input-dpdk
+Group: Liberouter
+License: BSD
+Vendor: CESNET, z.s.p.o.
+Packager: @USERNAME@ <@USERMAIL@>
+Summary: NDP input plugin for ipfixprobe IPFIX flow exporter.
+Requires: dpdk
+BuildRequires: dpdk-devel
+Provides: ipfixprobe-input-dpdk
+
+%description -n ipfixprobe-input-dpdk
+Input plugin to monitor network traffic on network interface using DPDK and HW acceleration cards.
+
+%prep
+%setup -n ipfixprobe-%{version}
+
+%build
+./configure -q --enable-silent-rules --prefix=%{_prefix} --libdir=%{_libdir} --bindir=%{_bindir} --sysconfdir=%{_sysconfdir} --docdir=%{_docdir} --mandir=%{_mandir} --datadir=%{_datadir} --with-raw=%{compile_raw} --with-nemea=%{compile_nemea} --with-unwind=%{compile_unwind} --enable-legacy-ssl=%{is_el7} --with-dpdk --disable-pcap-plugin
+make clean
+make -j5
+
+%install
+make -j5 DESTDIR=$RPM_BUILD_ROOT install
+
+%post
+test -x %{_bindir}/ipfixprobe && setcap "CAP_NET_RAW+eip" %{_bindir}/ipfixprobe || true
+ldconfig
+
+%files
+%attr(0755, root, nemead) %{_bindir}/ipfixprobe
+%attr(0755, root, nemead) %{_bindir}/ipfixprobe_stats
+%attr(0755, root, nemead) %{_bindir}/ipfixprobed
+%{_sysconfdir}/bash_completion.d/ipfixprobe.bash
+%{_sysconfdir}/ipfixprobe/link0.conf.example
+%{_docdir}/ipfixprobe/README.md
+@systemdsystemunitdir@
+
+%files -n ipfixprobe-input-dpdk
+%{_libdir}/ipfixprobe/input-dpdk.so
+%{_libdir}/ipfixprobe/input-dpdk.la
+
diff --git a/ipfixprobe-ndp.spec.in b/ipfixprobe-ndp.spec.in
new file mode 100644
index 00000000..9886f19e
--- /dev/null
+++ b/ipfixprobe-ndp.spec.in
@@ -0,0 +1,123 @@
+%bcond_without raw
+%bcond_with nemea
+%bcond_with unwind
+%bcond_with is_el7
+
+%if %{with raw}
+%global compile_raw yes
+%else
+%global compile_raw no
+%endif
+
+%if %{with nemea}
+%global compile_nemea yes
+%else
+%global compile_nemea @COPRRPM@
+%endif
+
+%if %{with unwind}
+%global compile_unwind yes
+%else
+%global compile_unwind @COPRRPM@
+%endif
+
+%if "%{dist}" == ".el7"
+%global is_el7 yes
+%else
+%global is_el7 no
+%endif
+
+Name: ipfixprobe-ndp
+Version: @PACKAGE_VERSION@
+Release: @RELEASE@
+URL: http://nemea.liberouter.org/
+Source: https://www.liberouter.org/repo/SOURCES/ipfixprobe-%{version}-%{release}.tar.gz
+Group: Liberouter
+License: BSD
+Vendor: CESNET, z.s.p.o.
+Packager: @USERNAME@ <@USERMAIL@>
+BuildRoot: %{_tmppath}/ipfixprobe-%{version}-%{release}
+Summary: IPFIX flow exporter with NDP support and various extending IPFIX elements exported by plugins.
+Requires: libatomic
+BuildRequires: gcc gcc-c++ make doxygen pkgconfig libatomic
+Provides: ipfixprobe
+Requires: netcope-common
+Requires: numactl
+BuildRequires: netcope-common
+BuildRequires: numactl-devel
+
+%if %{with nemea} || "@COPRRPM@" == "yes"
+Requires: libtrap
+BuildRequires: libtrap-devel
+BuildRequires: unirec
+%endif
+
+%if %{with unwind} || "@COPRRPM@" == "yes"
+Requires: libunwind
+BuildRequires: libunwind-devel
+%endif
+
+%if "%{is_el7}" == "yes"
+Requires: openssl11
+BuildRequires: openssl11-devel
+%else
+Requires: openssl
+BuildRequires: openssl-devel
+%endif
+
+%description
+This package contains IPFIX flow exporter with NDP support.
+
+%package -n ipfixprobe-input-ndp
+Group: Liberouter
+License: BSD
+Vendor: CESNET, z.s.p.o.
+Packager: @USERNAME@ <@USERMAIL@>
+Summary: NDP input plugin for ipfixprobe IPFIX flow exporter.
+Requires: netcope-common
+Requires: numactl
+BuildRequires: netcope-common
+BuildRequires: numactl-devel
+Provides: ipfixprobe-input-ndp
+
+%description -n ipfixprobe-input-ndp
+Input plugin to monitor network traffic on network interface using NDP and HW acceleration cards.
+
+%prep
+%setup -n ipfixprobe-%{version}
+
+%build
+./configure -q --enable-silent-rules --prefix=%{_prefix} --libdir=%{_libdir} --bindir=%{_bindir} --sysconfdir=%{_sysconfdir} --docdir=%{_docdir} --mandir=%{_mandir} --datadir=%{_datadir} --with-raw=%{compile_raw} --with-nemea=%{compile_nemea} --with-unwind=%{compile_unwind} --enable-legacy-ssl=%{is_el7} --with-ndp --disable-pcap-plugin
+make clean
+make -j5
+
+%install
+make -j5 DESTDIR=$RPM_BUILD_ROOT install
+
+%post
+test -x %{_bindir}/ipfixprobe && setcap "CAP_NET_RAW+eip" %{_bindir}/ipfixprobe || true
+ldconfig
+
+%files
+%attr(0755, root, nemead) %{_bindir}/ipfixprobe
+%attr(0755, root, nemead) %{_bindir}/ipfixprobe_stats
+%attr(0755, root, nemead) %{_bindir}/ipfixprobed
+%{_sysconfdir}/bash_completion.d/ipfixprobe.bash
+%{_sysconfdir}/ipfixprobe/link0.conf.example
+%{_docdir}/ipfixprobe/README.md
+%{_libdir}/libndpRI.so.0
+%{_libdir}/libndpRI.so.0.0.0
+%{_includedir}/ndpheader.h
+%{_includedir}/ndpreader.h
+%{_includedir}/ndpreader.hpp
+%{_libdir}/libndpRI.a
+%{_libdir}/libndpRI.la
+%{_libdir}/libndpRI.so
+@systemdsystemunitdir@
+
+%files -n ipfixprobe-input-ndp
+%{_libdir}/ipfixprobe/input-ndp.so
+%{_libdir}/ipfixprobe/input-ndp.la
+%{_libdir}/libndpRI.so.0
+%{_libdir}/libndpRI.so.0.0.0
+
diff --git a/ipfixprobe.spec.in b/ipfixprobe.spec.in
index b88bbb45..786bff43 100644
--- a/ipfixprobe.spec.in
+++ b/ipfixprobe.spec.in
@@ -11,12 +11,6 @@
 %global compile_ndp no
 %endif
 
-%if %{with pcap}
-%global compile_pcap yes
-%else
-%global compile_pcap @COPRRPM@
-%endif
-
 %if %{with raw}
 %global compile_raw yes
 %else
@@ -86,6 +80,19 @@ BuildRequires: openssl-devel
 %description
 This package contains nemea flow exporter.
 
+%package input-pcap
+Group: Liberouter
+License: BSD
+Vendor: CESNET, z.s.p.o.
+Packager: @USERNAME@ <@USERMAIL@>
+Summary: Libpcap input plugin for ipfixprobe IPFIX flow exporter.
+Requires: libpcap
+BuildRequires: libpcap-devel
+Provides: ipfixprobe-input-pcap
+
+%description input-pcap
+Input plugin to monitor network traffic on network interface using libpcap or to process packets stored in PCAP files.
+
 %prep
 %setup
 
@@ -136,5 +143,7 @@ This package contains header file for liburfilter.
 %{_libdir}/libndpRI.so
 %endif
 
-
+%files input-pcap
+%{_libdir}/ipfixprobe/input-pcap.so
+%{_libdir}/ipfixprobe/input-pcap.la
 
diff --git a/pluginmgr.cpp b/pluginmgr.cpp
index 1a34468a..e5d7395b 100644
--- a/pluginmgr.cpp
+++ b/pluginmgr.cpp
@@ -41,6 +41,8 @@
  *
  */
 
+#include <config.h>
+
 #include <dlfcn.h>
 
 #include "pluginmgr.hpp"
@@ -111,9 +113,22 @@ std::vector<Plugin *> PluginManager::get() const
 Plugin *PluginManager::load(const std::string &name)
 {
    dlerror();
+
    void *handle = dlopen(name.c_str(), RTLD_LAZY);
    if (handle == nullptr) {
-      return nullptr;
+      std::string filename = std::string(PLUGINDIR) + "/input-" + name + ".so";
+      handle = dlopen(filename.c_str(), RTLD_LAZY);
+      if (handle == nullptr) {
+         filename = std::string(PLUGINDIR) + "/output-" + name + ".so";
+         handle = dlopen(filename.c_str(), RTLD_LAZY);
+         if (handle == nullptr) {
+            filename = std::string(PLUGINDIR) + "/process-" + name + ".so";
+            handle = dlopen(filename.c_str(), RTLD_LAZY);
+            if (handle == nullptr) {
+               return nullptr;
+            }
+         }
+      }
    }
    if (m_last_rec == nullptr || m_last_rec->m_next == nullptr) {
       dlclose(handle);