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From: Yves-Alexis Perez <>
To: Greg KH <>, Kiran <>
Cc:, Diego Giagio <>
Subject: Re: /net/usb/ipheth.c incompatibility with Apple iOS 14
Date: Sun, 11 Oct 2020 11:12:59 +0200
Message-ID: <> (raw)
In-Reply-To: <>

Hash: SHA256

On Mon, 2020-09-28 at 19:50 +0200, Greg KH wrote:
> On Sun, Sep 27, 2020 at 07:14:39AM -0700, Kiran wrote:
> > Effect on end user: when a linux machine is connected via USB to an
> > iPhone that has been updated to iOS 14 and has personal hotspot mode
> > turned on, the user cannot connect to the internet.
> > 
> > Troubleshooting: DNS works, the linux machine can ping the iPhone
> > gateway, pinging hangs. It appears that there is a change
> > to the USB packets that iOS expects.
> > 
> > Here is a link to what I think is the most relevant part of a Github
> > issue discussion with more specific details:
> > 
> >
> > 
> > This is my first linux bug report and I'm not familiar with kernel
> > development. The other people in the Github post will be better to
> > talk to regarding a fix. But if I can provide more info, just let me
> > know.
> Not much we can do about this, but if you come up with a patch that
> works, please let us know and we will be glad to review it.

Hi Greg,

I'm experiencing the issue myself so I should be able to test a patch and
submit it properly once we have one.

Unfortunately it seems that we don't really have a clue how the driver is
really supposed to behave and negotiate with the device. I'm adding Diego
Giagio to CC because his address is in the file header and in case he could
jump in and help, but I'm not holding my breath since the copyright date is
from 2009.

It'd be nice if we had some documentation and/or contact at Apple, but other
than that I guess we'll have to poke around and see how the itunes driver do
their job in MacOS or Windows.

- -- 


  reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-27 14:14 Kiran
2020-09-28 17:50 ` Greg KH
2020-10-11  9:12   ` Yves-Alexis Perez [this message]
2020-11-19 17:24 ` [PATCH] usbnet: ipheth: fix connectivity with " Yves-Alexis Perez
2020-11-20  9:15   ` Sergei Shtylyov
2020-11-20 16:56     ` Yves-Alexis Perez
2020-11-21 22:03   ` Jakub Kicinski
2020-11-24 10:41     ` Yves-Alexis Perez
2020-11-24 16:39       ` Jakub Kicinski

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