Update to dhcpcd-6.10.1 with the following changes:
  *  Add -P, --printpidfile to print the pidfile dhcpcd will use to
    stdout
  *  Fix a crash when a non active interface departs
  *  Add the -1, --oneshot option which causes dhcpcd to exit once an
    interface has been configured
  *  Fix delegation activating interfaces

(roy)