Function send_lease_break 

fn send_lease_break(
    outbound: &Sender<Vec<u8>>,
    crypto: &BreakCrypto,
    key: [u8; 16],
    current: u32,
    new: u32,
    epoch: u16,
)

Build, protect and enqueue an unsolicited LEASE_BREAK notification ([MS-SMB2] §2.2.23.2) asking a holder to drop from current to new.