Origin for each line in dhcpcd.service.mk from check-in 7b547778fc:

7a1e7f4a58 2019-10-21        arcade: DAEMON_dhcpcd_COMMAND?=/sbin/dhcpcd
8bf9550f99 2022-05-29        arcade: DAEMON_dhcpcd_FLAGS?="-h${HOSTNAME}"
bc20f9df9f 2019-10-24        arcade: DAEMON_dhcpcd_BACKGROUND?=-b
bc20f9df9f 2019-10-24        arcade: DAEMON_dhcpcd_FOREGROUND?=-B
bc20f9df9f 2019-10-24        arcade: 
d8511a3d7c 2022-05-30        arcade: dhcpcd: ${_SERVICE} NETWORK SERVICE # mount -> SERVICE, cleanvar -> SERVICE
d8511a3d7c 2022-05-30        arcade: 
d8511a3d7c 2022-05-30        arcade: NETWORK_EXIT: dhcpcd_exit
d8511a3d7c 2022-05-30        arcade: SERVICE_EXIT: dhcpcd_exit