dhcpcd-6.1 is supposed to have fixed TCP FIN issues on reboot
Revert "dhcpcd-6.1 is supposed to have fixed TCP FIN issues on reboot"

This reverts commit 7b8c3abf482d752af90811a2092585673a5dbca3.
do not put reboot into background
Merge remote-tracking branch 'zenops/zentoo-amd64-base' into madvertise-amd64-base