dhcp incorrect license
https://github.com/alpinelinux/aports/pull/6265
The license was changed when 4.4.0 was released.
DHCP is available for free download under the terms of the MPL 2.0
license.
https://www.mozilla.org/en-US/MPL/2.0/
https://www.isc.org/downloads/software-support-policy/isc-license/
“BIND versions prior to BIND 9.11.0, all versions of ISC DHCP prior to
ISC DHCP 4.4.0, and Kea versions prior to Kea 1.0.0 are released under
the ISC License[…]”
(from redmine: issue id 10161, created on 2019-03-26, closed on 2019-06-19)