Enum DhcpSession 

pub enum DhcpSession {}

With dhcp off there is no such thing as a lease, and this type says so in the type system rather than in a comment: it is UNINHABITED.

It exists so bring_up_network keeps ONE signature across both builds (one implementation — the alternative is two copies of a forty-line function that differ by one arm). Its Option<DhcpSession> is then provably None, and every downstream Some(session) branch is a match session {} the compiler proves unreachable — a by-construction guarantee, not a runtime check.

Trait Implementations

impl Clone for DhcpSession

fn clone(&self) -> DhcpSession

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DhcpSession

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Eq for DhcpSession

impl PartialEq for DhcpSession

fn eq(&self, other: &DhcpSession) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for DhcpSession