[Bloat] mDNS

[Aaron Wood]

On Tue, Feb 27, 2024 at 10:52 AM Rich Brown via Bloat <
bloat at lists.bufferbloat.net> wrote:

>
>
> On Feb 27, 2024, at 12:00 PM, bloat-request at lists.bufferbloat.net wrote:
>
> On 2/26/2024 6:28 AM, Rich Brown via Bloat wrote:
>
> - Avoid the WAN port's DHCP assigned subnet (what if the ISP uses
> 192.168.1.0/24?)
>
>
> I recently got ATT fiber and its modem won't let me assign from
> 10.0.0.0/8! So I put a Raspberry Pi 4 in front of it.
>
>
> Exactly! There are no rules about what subnet range an ISP's gear will
> assign to DHCP devices.
>
> So (I believe) it becomes incumbent on OpenWrt to be smarter than the
> ISP's router (shouldn't be hard) and pick a separate subnet for its LAN &
> wireless interface. (Clearly, OpenWrt could default to 192.168.1.0/24,
> but if that's that range the ISP is using, it could switch to
> 192.168.2.0/24. I think that's all the flexibility that's required...)
>

I did exactly this for a product that needed to create its own subnet
inside a house.  It worked well at scale (>1M homes).


And then advertise a mDNS name to make it easy for humans to connect. Who
> would notice?
>

Unfortunately, it can be hard to convince browsers that you’re connecting
to a local DNS name instead of a doing a search.


- Newcomers wouldn't - they'd just connect and configure as described in
> the Wiki
> - Grizzled OpenWrt old-timers wouldn't notice either, because they will
> have set their ISP device to use some other address range.
>
> Any reason not to build this into OpenWrt? Thanks.
>
> Rich
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