There is a new pull request by knusbaum against master on the void-packages repository

https://github.com/knusbaum/void-packages NEW_NETNS
https://github.com/void-linux/void-packages/pull/13215

New package: netns-0.5.3
#13132

A patch file from https://github.com/void-linux/void-packages/pull/13215.patch is attached