Re: [fuse-emulator-devel] W5100 emulation in Fuse

[Andrea <mar...@gm...>]

On 28/04/2021 15:12, Alan Cox wrote:
> On Tue, 27 Apr 2021 08:21:14 +0100
> Andrea <mar...@gm...> wrote:
> 
>> I see FUSE has a W5100 Ethernet card emulation
>> I think this is what VirtualBox does.
> 
> Take a look at
> 
> https://github.com/kvmtool/kvmtool/tree/master/net/uip
> 
> It's a dead project now but the uip code in it turns a raw network
> connection into host tcp, udp etc. You'd still probably need the DHCP
> proxy in there but it should let you turn macraw into host sockets for at
> least the simple stacks used on micros. There is a much better version of
> the code in very old versions of the Intel clear containers but I've no
> idea where you'd dig that out on the net any more.
> 

Yes, I can see they make up DHCP replies. This is exactly what I meant.
Would be nice to extract it and reuse it.

> Another bizarre but effective approach is to make your emulator one end
> of a simple VPN/IPIP tunnel instead and run the server end somewhere.


not sure I understand this. would it not require privileges too?