forced route in multi net dev

[lhw2002426]

No description provided.

[ken4647]

warning: unused import: `self`
  --> modules/ruxnet/src/smoltcp_impl/tcp.rs:19:22
   |
19 | use smoltcp::iface::{self, SocketHandle};
   |                      ^^^^
   |
   = note: `#[warn(unused_imports)]` on by default

warning: unused import: `self`
  --> modules/ruxnet/src/smoltcp_impl/mod.rs:27:22
   |
27 | use smoltcp::iface::{self, Config, Interface, SocketHandle, SocketSet};
   |                      ^^^^

warning: unnecessary `unsafe` block
   --> modules/ruxnet/src/smoltcp_impl/tcp.rs:160:47
    |
160 |                 .find(|iface| iface.name() == unsafe { self.iface_name.lock().clone().unwrap() })
    |                                               ^^^^^^ unnecessary `unsafe` block
    |
    = note: `#[warn(unused_unsafe)]` on by default

warning: unnecessary `unsafe` block
   --> modules/ruxnet/src/smoltcp_impl/tcp.rs:191:9
    |
191 |         unsafe {
    |         ^^^^^^ unnecessary `unsafe` block

warning: unnecessary `unsafe` block
   --> modules/ruxnet/src/smoltcp_impl/tcp.rs:372:9
    |
372 |         unsafe {
    |         ^^^^^^ unnecessary `unsafe` block

please solve these warnings during compling.