I use dash as /bin/sh. After OpenRC starts, I find an error message on the console:

/lib64/rc/sh/gendepends.sh: 9: [: netif.tmpl: unexpected operator

I guess this is due to == in the following line: https://github.com/funtoo/corenetwork/blob/11a554d8002fae7ccb6c9289b6f7115c3eed51e5/init.d/netif.tmpl#L9