New comment by mobinmob on void-packages repository

https://github.com/void-linux/void-packages/pull/25743#issuecomment-787203836

Comment:
Changes:

- Remove the warning from the start of the configuration file that is linked in `/etc/66rc.conf`. That is a tiny usability improvement. The removal happens automatically if the file is generated by using 66-env, but it is just copied in the `66boot-initial-setup` script.
- Add two upstream patches. The first fixes a potential  issue discovered by testing this PR with voidvault (encrypted root with btrfs subvolumes). The second makes the iptables service more robust, since it will not need an external script to function.