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help3002

This forum is provided to promote discussion amongst students enrolled in CITS3002 Computer Networks.

Please consider offering answers and suggestions to help other students! And if you fix a problem by following a suggestion here, it would be great if other interested students could see a short "Great, fixed it!"  followup message. How do I ask a good question?

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 UWA week 10 (1st semester, week 2) ↓
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3:14pm Sun 10th Mar, Christopher M.

What Linux distribution are you running inside WSL-2 ? It's rather unusual for a Linux distribution not to come with glibc.

Can you provide the full (long) output from ldd /usr/local/bin/cnet on your system? It should show what's installed, and what's missing.
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3:30pm Sun 10th Mar, ANONYMOUS

I'm using Ubuntu (I think 22.04)

Here's the output:

/usr/local/bin/cnet: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.38' not found (required by /usr/local/bin/cnet)
/usr/local/bin/cnet: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.38' not found (required by /usr/local/bin/cnet)
/usr/local/bin/cnet: /lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.32' not found (required by /usr/local/bin/cnet)
        linux-vdso.so.1 (0x00007ffee61c0000)
        libelf.so.1 => /lib/x86_64-linux-gnu/libelf.so.1 (0x00007f7a2156d000)
        libX11.so.6 => /lib/x86_64-linux-gnu/libX11.so.6 (0x00007f7a2142d000)
        libSM.so.6 => /lib/x86_64-linux-gnu/libSM.so.6 (0x00007f7a21422000)
        libxkbcommon.so.0 => /lib/x86_64-linux-gnu/libxkbcommon.so.0 (0x00007f7a213db000)
        libgtk-3.so.0 => /lib/x86_64-linux-gnu/libgtk-3.so.0 (0x00007f7a20bb2000)
        libgdk-3.so.0 => /lib/x86_64-linux-gnu/libgdk-3.so.0 (0x00007f7a20aa9000)
        libpangocairo-1.0.so.0 => /lib/x86_64-linux-gnu/libpangocairo-1.0.so.0 (0x00007f7a20a97000)
        libcairo.so.2 => /lib/x86_64-linux-gnu/libcairo.so.2 (0x00007f7a2096f000)
        libgdk_pixbuf-2.0.so.0 => /lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0 (0x00007f7a2093f000)
        libgio-2.0.so.0 => /lib/x86_64-linux-gnu/libgio-2.0.so.0 (0x00007f7a20766000)
        libpangoft2-1.0.so.0 => /lib/x86_64-linux-gnu/libpangoft2-1.0.so.0 (0x00007f7a2074b000)
        libpango-1.0.so.0 => /lib/x86_64-linux-gnu/libpango-1.0.so.0 (0x00007f7a206e2000)
        libgobject-2.0.so.0 => /lib/x86_64-linux-gnu/libgobject-2.0.so.0 (0x00007f7a20682000)
        libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f7a20548000)
        libfontconfig.so.1 => /lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007f7a204fe000)
        libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f7a204e2000)
        libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f7a202b6000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f7a201cd000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f7a201ad000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f7a1ff84000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f7a21dd6000)
        libxcb.so.1 => /lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f7a1ff5a000)
        libICE.so.6 => /lib/x86_64-linux-gnu/libICE.so.6 (0x00007f7a1ff3d000)
        libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f7a1ff34000)
        libgmodule-2.0.so.0 => /lib/x86_64-linux-gnu/libgmodule-2.0.so.0 (0x00007f7a1ff2b000)
        libXi.so.6 => /lib/x86_64-linux-gnu/libXi.so.6 (0x00007f7a1ff17000)
        libXfixes.so.3 => /lib/x86_64-linux-gnu/libXfixes.so.3 (0x00007f7a1ff0f000)
        libcairo-gobject.so.2 => /lib/x86_64-linux-gnu/libcairo-gobject.so.2 (0x00007f7a1ff03000)
        libatk-1.0.so.0 => /lib/x86_64-linux-gnu/libatk-1.0.so.0 (0x00007f7a1fed9000)
        libatk-bridge-2.0.so.0 => /lib/x86_64-linux-gnu/libatk-bridge-2.0.so.0 (0x00007f7a1fea1000)
        libepoxy.so.0 => /lib/x86_64-linux-gnu/libepoxy.so.0 (0x00007f7a1fd6a000)
        libfribidi.so.0 => /lib/x86_64-linux-gnu/libfribidi.so.0 (0x00007f7a1fd4e000)
        libharfbuzz.so.0 => /lib/x86_64-linux-gnu/libharfbuzz.so.0 (0x00007f7a1fc7f000)
        libXinerama.so.1 => /lib/x86_64-linux-gnu/libXinerama.so.1 (0x00007f7a1fc7a000)
        libXrandr.so.2 => /lib/x86_64-linux-gnu/libXrandr.so.2 (0x00007f7a1fc6d000)
        libXcursor.so.1 => /lib/x86_64-linux-gnu/libXcursor.so.1 (0x00007f7a1fc5f000)
        libXcomposite.so.1 => /lib/x86_64-linux-gnu/libXcomposite.so.1 (0x00007f7a1fc5a000)
        libXdamage.so.1 => /lib/x86_64-linux-gnu/libXdamage.so.1 (0x00007f7a1fc55000)
        libwayland-cursor.so.0 => /lib/x86_64-linux-gnu/libwayland-cursor.so.0 (0x00007f7a1fc4b000)
        libwayland-egl.so.1 => /lib/x86_64-linux-gnu/libwayland-egl.so.1 (0x00007f7a1fc46000)
        libwayland-client.so.0 => /lib/x86_64-linux-gnu/libwayland-client.so.0 (0x00007f7a1fc35000)
        libXext.so.6 => /lib/x86_64-linux-gnu/libXext.so.6 (0x00007f7a1fc20000)
        libpixman-1.so.0 => /lib/x86_64-linux-gnu/libpixman-1.so.0 (0x00007f7a1fb73000)
        libfreetype.so.6 => /lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f7a1faab000)
        libpng16.so.16 => /lib/x86_64-linux-gnu/libpng16.so.16 (0x00007f7a1fa70000)
        libxcb-shm.so.0 => /lib/x86_64-linux-gnu/libxcb-shm.so.0 (0x00007f7a1fa6b000)
        libxcb-render.so.0 => /lib/x86_64-linux-gnu/libxcb-render.so.0 (0x00007f7a1fa5c000)
        libXrender.so.1 => /lib/x86_64-linux-gnu/libXrender.so.1 (0x00007f7a1fa4d000)
        libjpeg.so.8 => /lib/x86_64-linux-gnu/libjpeg.so.8 (0x00007f7a1f9cc000)
        libmount.so.1 => /lib/x86_64-linux-gnu/libmount.so.1 (0x00007f7a1f988000)
        libselinux.so.1 => /lib/x86_64-linux-gnu/libselinux.so.1 (0x00007f7a1f95c000)
        libthai.so.0 => /lib/x86_64-linux-gnu/libthai.so.0 (0x00007f7a1f951000)
        libffi.so.8 => /lib/x86_64-linux-gnu/libffi.so.8 (0x00007f7a1f942000)
        libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f7a1f8cc000)
        libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f7a1f89b000)
        libXau.so.6 => /lib/x86_64-linux-gnu/libXau.so.6 (0x00007f7a1f895000)
        libXdmcp.so.6 => /lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f7a1f88d000)
        libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f7a1f873000)
        libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007f7a1f825000)
        libatspi.so.0 => /lib/x86_64-linux-gnu/libatspi.so.0 (0x00007f7a1f7eb000)
        libgraphite2.so.3 => /lib/x86_64-linux-gnu/libgraphite2.so.3 (0x00007f7a1f7c4000)
        libbrotlidec.so.1 => /lib/x86_64-linux-gnu/libbrotlidec.so.1 (0x00007f7a1f7b6000)
        libblkid.so.1 => /lib/x86_64-linux-gnu/libblkid.so.1 (0x00007f7a1f77d000)
        libpcre2-8.so.0 => /lib/x86_64-linux-gnu/libpcre2-8.so.0 (0x00007f7a1f6e6000)
        libdatrie.so.1 => /lib/x86_64-linux-gnu/libdatrie.so.1 (0x00007f7a1f6dd000)
        libmd.so.0 => /lib/x86_64-linux-gnu/libmd.so.0 (0x00007f7a1f6d0000)
        libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f7a1f609000)
        libbrotlicommon.so.1 => /lib/x86_64-linux-gnu/libbrotlicommon.so.1 (0x00007f7a1f5e4000)
        liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f7a1f5b9000)
        libzstd.so.1 => /lib/x86_64-linux-gnu/libzstd.so.1 (0x00007f7a1f4ea000)
        liblz4.so.1 => /lib/x86_64-linux-gnu/liblz4.so.1 (0x00007f7a1f4ca000)
        libcap.so.2 => /lib/x86_64-linux-gnu/libcap.so.2 (0x00007f7a1f4bf000)
        libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007f7a1f381000)
        libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f7a1f359000)

 UWA week 11 (1st semester, week 3) ↓
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4:21am Mon 11th Mar, Christopher M.

ANONYMOUS wrote:
> I'm using Ubuntu (I think 22.04)
You should be able to see your version with cat /etc/os-release Here's my thinking: while your system has shared libraries for libm, libc, and libstdc++ (reported by ldd)
> /usr/local/bin/cnet: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.38' not found (required by /usr/local/bin/cnet) > .... > libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f7a201cd000)
the error message suggests that your system has an earlier version of things. My Ubuntu 23.04 system has GLIBC_2.38 (I update my system/libraries about every week with sudo apt upgrade). If I run ldd -v /usr/local/bin/cnet | grep libm.so, it reports (long): 
    libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f4c60331000)
	    libm.so.6 (GLIBC_2.38) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.23) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.29) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.2.5) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.38) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.29) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.2.5) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.38) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.2.5) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.2.5) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.29) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.38) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.35) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.2.5) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.2.5) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.2.5) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.2.5) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.29) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.2.5) => /lib/x86_64-linux-gnu/libm.so.6
    /lib/x86_64-linux-gnu/libm.so.6:
	    libm.so.6 (GLIBC_2.35) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.2.5) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.29) => /lib/x86_64-linux-gnu/libm.so.6
	    libm.so.6 (GLIBC_2.2.5) => /lib/x86_64-linux-gnu/libm.so.6
which (I think) is reporting the versions of GLIBC with which the installed /lib/x86_64-linux-gnu/libm.so.6 library provides backwards-compatability (2.38 being the highest). Does your system show 2.38 (or higher), or a lower maximum? Could you try updating your libraries with apt if you haven't in a while?

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9:18am Mon 11th Mar, ANONYMOUS

I'm having the same issue /usr/local/bin/cnet: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.38' not found (required by /usr/local/bin/cnet) /usr/local/bin/cnet: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.33' not found (required by /usr/local/bin/cnet) /usr/local/bin/cnet: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.38' not found (required by /usr/local/bin/cnet) /usr/local/bin/cnet: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found (required by /usr/local/bin/cnet) /usr/local/bin/cnet: /lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.32' not found (required by /usr/local/bin/cnet) /usr/local/bin/cnet: /lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.29' not found (required by /usr/local/bin/cnet) /usr/local/bin/cnet: /lib/x86_64-linux-gnu/libstdc++.so.6: version `CXXABI_1.3.13' not found (required by /usr/local/bin/cnet)

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9:25am Mon 11th Mar, ANONYMOUS

I just tested it with a fresh install of Ubuntu 22.04 in WSL 2, and ran ``sudo apt update && sudo apt upgrade -y``, and it updated everything. When I run ``ldd -v /usr/local/bin/cnet | grep libm.so``, I get the output: 
/usr/local/bin/cnet: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.38' not found (required by /usr/local/bin/cnet)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f8384787000)
                libm.so.6 (GLIBC_2.38) => not found
                libm.so.6 (GLIBC_2.23) => /lib/x86_64-linux-gnu/libm.so.6
                libm.so.6 (GLIBC_2.29) => /lib/x86_64-linux-gnu/libm.so.6
                libm.so.6 (GLIBC_2.2.5) => /lib/x86_64-linux-gnu/libm.so.6
                libm.so.6 (GLIBC_2.2.5) => /lib/x86_64-linux-gnu/libm.so.6
        /lib/x86_64-linux-gnu/libm.so.6:
As far as I can tell, Ubuntu 23.04 isn't available in WSL 2, 22.04 being the newest version.

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9:39am Mon 11th Mar, ANONYMOUS

I have found a solution

Ubuntu needs to be updated to 23.10. To do this, run sudo apt update && sudo apt upgrade -y. Once this has completed, run sudo do-release-upgrade and you'll be prompted to edit the file /etc/update-manager/release-upgrades to allow normal Ubuntu installations, rather than LTS ones. Once this file has been edited, rerun sudo do-release-upgrade. This process may take a while, but allow all prompts and restart WSL when completed.

After this you should have Ubuntu 23.10. Other libraries may be required to be installed. For example, I had to install build-essential and libsm-dev.
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12:44pm Mon 11th Mar, Christopher M.

ANONYMOUS wrote:
> I have found a solution
Thanks very much for that! I have updated the installation instructions here - [CITS3002]⬈ If others 'uncover' additional packages that are required, please send the details to me. Good luck,

The University of Western Australia

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