[Bloat] What is the ifb4 interface?

[Sam]

While on the subject... I'm more interested in the packet flow. Like 
where does iptables fit at between the ifb and eth0?

--Sam


On 11/18/20 7:53 AM, Kenneth Porter wrote:
> I'd never understood what the ifb4 interface was for. Here's a nice 
> diagram from an sqm-scripts GitHub issue.
> 
> Ken
> 
> 
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> Subject: 	Re: [tohojo/sqm-scripts] diagram needed (#125)
> Date: 	Tue, 17 Nov 2020 19:36:47 -0800
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> 
> 
> Well it's not great, maybe something like this
> example 
> <https://user-images.githubusercontent.com/476401/99479609-5ad1a580-290b-11eb-8a36-e8e0757431c2.png> 
> Here's the dia file (gzip'd cause github)
> example.dia.gz 
> <https://github.com/tohojo/sqm-scripts/files/5557551/example.dia.gz>
> 
> I was trying to wrap my head around why ifb4 existed and how it worked. 
> Maybe it could somehow explain that qdisc's can only work on packets 
> leaving a device and that's the reason for the ifb4.
> 
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