Constant tox_packet::onion::ONION_RETURN_2_SIZE

pub const ONION_RETURN_2_SIZE: usize = secretbox::NONCEBYTES + SIZE_IPPORT + MACBYTES + ONION_RETURN_1_SIZE; // 0x0_000_000_000_000_076usize

Size of second OnionReturn struct with one inner OnionReturn.