Packages which depend on isc-dhcp-client do so because they invoke the dhcp client directly for their own purposes. This will not change; systemd-networkd does not expose a dhcp client for direct use by other callers.
Packages which depend on isc-dhcp-client do so because they invoke the dhcp client directly for their own purposes. This will not change; systemd-networkd does not expose a dhcp client for direct use by other callers.