# Re: \[PATCH net-next\] net: x25\_asy: Delete the x25\_asy driver

- From: Xie He \<hidden\>
- Date: 2020-11-06 11:25:18 
- List: netdev
- Page: https://ratatoskr.run/netdev/2020/11/6166992
- Thread: https://ratatoskr.run/netdev/2020/11/6165045/t.md

```text
On Fri, Nov 6, 2020 at 1:03 AM David Laight [ref] wrote:
>
> Hmmm.... LAPB would expect to have an X.25 level 3 and maybe ISO
> transport (class 0, 2 or 3) sat on top of it.

I actually used AF_PACKET sockets to transport data directly over LAPB
and it worked.

LAPB doesn't need anything from layer 3. It just sees the layer 3
packets as a sequence of packets, numbers them and reliably transports
them in order. It doesn't read the internal contents of the packets.
```