There is an updated pull request by CameronNemo against master on the void-packages repository

https://github.com/CameronNemo/void-packages lxc5-fix-setuid
https://github.com/void-linux/void-packages/pull/38726

backport meson patch to set lxc-user-nic suid bit
Switch to meson had a small casualty.
Rebuild with patched meson.
Also simplify the docbook2x patch.

https://github.com/mesonbuild/meson/pull/10702
https://github.com/lxc/lxc/pull/4177

Closes #38682

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#### Testing the changes
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A patch file from https://github.com/void-linux/void-packages/pull/38726.patch is attached