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

https://github.com/abenson/void-packages iptables_1.8.6
https://github.com/void-linux/void-packages/pull/26169

iptables: update to 1.8.6.


A patch file from https://github.com/void-linux/void-packages/pull/26169.patch is attached