Function confirm_reachable

pub fn confirm_reachable<I, D, CC, BC>(
    core_ctx: &mut CC,
    bindings_ctx: &mut BC,
    device_id: &CC::DeviceId,
    neighbor: SpecifiedAddr<I::Addr>,
)
where
    I: Ip,
    D: LinkDevice,
    BC: NudBindingsContext<I, D, CC::DeviceId>,
    CC: NudContext<I, D, BC>,

Confirm upper-layer forward reachability to the specified neighbor through the specified device.