Cargo Features

tun2 has no features set by default.

tun2 = { version = "2.0.1", features = ["async"] }
async = futures-core, tokio, tokio-util

Affects tun2::r#async

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

futures-core async?
tokio async?
tokio-util async?