Origin for each line in dhcpcd.service from check-in 47c6cc1171:

5062c9b6fc 2019-10-19        arcade: # vim:ft=make:
5062c9b6fc 2019-10-19        arcade: 
47c6cc1171 2019-10-20        arcade: DAEMON_dhcpcd_COMMAND?=/sbin/dhcpcd
b8c8da525b 2019-10-20        arcade: DAEMON_dhcpcd_ENABLE?=no
b8c8da525b 2019-10-20        arcade: DAEMON_dhcpcd_FLAGS?=-B
5062c9b6fc 2019-10-19        arcade: 
b8c8da525b 2019-10-20        arcade: dhcpcd: _service mount cleanvar ifconfig