Cargo Features

[dependencies]
bluetooth-hci = { version = "0.1.0", default-features = false, features = ["version-4-1", "version-4-2", "version-5-0"] }
default = version-4-1

The version-4-1 feature is set by default whenever bluetooth-hci is added without default-features = false somewhere in the dependency tree.

version-4-1 default
version-4-2
version-5-0

Affects host::Hci.le_set_advertising_enable, host::Hci.le_add_anon_advertising_devices_to_white_list, host::Hci.le_remove_anon_advertising_devices_from_white_list