[TriEmbed] Raspberry Pi as WIFI client providing DHCP link to Internet via its wired ethernet

[Pete Soper]

On 03/22/2018 10:27 AM, Jon Wolfe wrote:
> Is it specifically dhcp that you need? Or are you really trying to 
> make a bridge, with dhcp one component? It might help to solve the 
> problem first with hardcoded static private ips for all the nodes, 
> then add dhcp when you get that working.
I have no choice for the upstream connection: it's a WIFI network that 
offers DHCP, period. If I knew what I was doing the RPI3 bridge would be 
perfectly transparent: the downstream router would see exactly the same 
IP address being offered by the upstream WIFI router, end of story. The 
RPI 3 would functionally be like a piece of CAT5 connected from the WLAN 
port of the downstream router to a switch port of the upstream router. 
That's what I want. But I don't know how to get it and all the recipes 
I've tried have had bags and bags of complexity that I don't want (but 
may need 'cause I don't understand this stuff properly).

-Pete

>
> -------- Original message --------
> From: Pete Soper via TriEmbed <triembed at triembed.org>
> Date: 3/22/18 10:05 AM (GMT-05:00)
> To: Triangle Embedded Computing Discussion <TriEmbed at triembed.org>
> Subject: [TriEmbed] Raspberry Pi as WIFI client providing DHCP link to 
> Internet via its wired ethernet
>
> I have a specific application need where a model 3 RPI needs to connect
> to a WIFI network as a client but provide one DHCP link via its wired
> ethernet port to a router WAN port so clients of that router can get to
> the Internet. If somebody has direct experience with this very specific
> scenario and has of a recipe that you know for a fact works, please
> point me to it. I know I'm being a choosing beggar here, but there are a
> number of recipes that only look like they apply to my use case and I'm
> tired of the rat holes. I have a kludge in place now using my microscope
> imaging laptop with Windows ICS and I need to get the laptop back to my
> shop, so this has become a priority.
>
> If somebody who considers this a piece of cake would like to see the new
> community laboratory hosting the Triangle DIY Biology organization in
> Durham and help me make this bridge work I'd appreciate it. (After
> renovation this will likely be the future home of Splatspace, by the
> way). The lab is at #24 Shoppers Street, Durham, NC 27707, across the
> parking lot from Scrap Exchange. I'll be there and available from 1-4pm
> today and 2-4pm Saturday. If you just want to come by and see the place,
> "all are welcome", most especially if you like playing with friendly
> kids interested in learning stuff.
>
> Thanks,
> Pete
>
>
>
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