Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
libns3.20-antenna.so
libns3.20-aodv.so
libns3.20-applications.so
libns3.20-bridge.so
libns3.20-buildings.so
libns3.20-config-store.so
libns3.20-core.so
libns3.20-csma-layout.so
libns3.20-csma.so
libns3.20-dsdv.so
libns3.20-dsr.so
libns3.20-emu.so
libns3.20-energy.so
libns3.20-fd-net-device.so
libns3.20-flow-monitor.so
libns3.20-internet.so
libns3.20-lr-wpan.so
libns3.20-lte.so
libns3.20-mesh.so
libns3.20-mobility.so
libns3.20-mpi.so
libns3.20-netanim.so
libns3.20-network.so
libns3.20-nix-vector-routing.so
libns3.20-olsr.so
libns3.20-point-to-point-layout.so
libns3.20-point-to-point.so
libns3.20-propagation.so
libns3.20-sixlowpan.so
libns3.20-spectrum.so
libns3.20-stats.so
libns3.20-tap-bridge.so
libns3.20-topology-read.so
libns3.20-uan.so
libns3.20-virtual-net-device.so
libns3.20-wave.so
libns3.20-wifi.so
libns3.20-wimax.so
libns3_20
libns3_20(x86-32)

Requires :

/sbin/ldconfig
/sbin/ldconfig
libc.so.6
libc.so.6(GLIBC_2.0)
libc.so.6(GLIBC_2.1)
libc.so.6(GLIBC_2.1.3)
libc.so.6(GLIBC_2.15)
libc.so.6(GLIBC_2.3.4)
libc.so.6(GLIBC_2.4)
libdl.so.2
libdl.so.2(GLIBC_2.0)
libdl.so.2(GLIBC_2.1)
libgcc_s.so.1
libgcc_s.so.1(GCC_3.0)
libgcc_s.so.1(GCC_4.0.0)
libgcc_s.so.1(GLIBC_2.0)
libglib-2.0.so.0
libgobject-2.0.so.0
libgtk-x11-2.0.so.0
libm.so.6
libm.so.6(GLIBC_2.0)
libm.so.6(GLIBC_2.1)
libmpi.so.1
libmpi_cxx.so.1
libns3.20-antenna.so
libns3.20-bridge.so
libns3.20-buildings.so
libns3.20-core.so
libns3.20-csma.so
libns3.20-energy.so
libns3.20-internet.so
libns3.20-lte.so
libns3.20-mobility.so
libns3.20-mpi.so
libns3.20-network.so
libns3.20-point-to-point.so
libns3.20-propagation.so
libns3.20-spectrum.so
libns3.20-stats.so
libns3.20-virtual-net-device.so
libns3.20-wifi.so
libpthread.so.0
libpthread.so.0(GLIBC_2.0)
libpthread.so.0(GLIBC_2.1)
libpthread.so.0(GLIBC_2.2)
libpthread.so.0(GLIBC_2.3.2)
librt.so.1
librt.so.1(GLIBC_2.2)
libsqlite3.so.0
libstdc++.so.6
libstdc++.so.6(CXXABI_1.3)
libstdc++.so.6(GLIBCXX_3.4)
libstdc++.so.6(GLIBCXX_3.4.11)
libstdc++.so.6(GLIBCXX_3.4.15)
libstdc++.so.6(GLIBCXX_3.4.20)
libstdc++.so.6(GLIBCXX_3.4.21)
libstdc++.so.6(GLIBCXX_3.4.9)
libxml2.so.2
libxml2.so.2(LIBXML2_2.4.30)
libxml2.so.2(LIBXML2_2.5.0)
libxml2.so.2(LIBXML2_2.6.0)
libxml2.so.2(LIBXML2_2.6.5)
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileCaps) <= 4.6.1-1
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
rpmlib(PayloadIsLzma) <= 4.4.6-1

Content of RPM :
/usr/lib/libns3.20-antenna.so
/usr/lib/libns3.20-aodv.so
/usr/lib/libns3.20-applications.so
/usr/lib/libns3.20-bridge.so
/usr/lib/libns3.20-buildings.so
/usr/lib/libns3.20-config-store.so
/usr/lib/libns3.20-core.so
/usr/lib/libns3.20-csma-layout.so
/usr/lib/libns3.20-csma.so
/usr/lib/libns3.20-dsdv.so
/usr/lib/libns3.20-dsr.so
/usr/lib/libns3.20-emu.so
/usr/lib/libns3.20-energy.so
/usr/lib/libns3.20-fd-net-device.so
/usr/lib/libns3.20-flow-monitor.so
/usr/lib/libns3.20-internet.so
/usr/lib/libns3.20-lr-wpan.so
/usr/lib/libns3.20-lte.so
/usr/lib/libns3.20-mesh.so
/usr/lib/libns3.20-mobility.so
/usr/lib/libns3.20-mpi.so
/usr/lib/libns3.20-netanim.so
/usr/lib/libns3.20-network.so
/usr/lib/libns3.20-nix-vector-routing.so
/usr/lib/libns3.20-olsr.so
/usr/lib/libns3.20-point-to-point-layout.so
/usr/lib/libns3.20-point-to-point.so
/usr/lib/libns3.20-propagation.so
/usr/lib/libns3.20-sixlowpan.so
/usr/lib/libns3.20-spectrum.so
There is 14 files more in these RPM.