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RE: Cannot ssh a raspbian guest from the host

From: adarmon
Subject: RE: Cannot ssh a raspbian guest from the host
Date: Mon, 18 Nov 2019 18:43:40 +0200

Thanks Peter and Jeremy for your help but it still does not work. 

According to the Peter's suggestion, this is the command I run:
sudo qemu-system-arm -no-reboot -curses -kernel 
/home/ubuntu/qemu_vms/kernel-qemu-4.4.34-jessie -cpu arm1176 -m 256 -M 
versatilepb -serial stdio -append "root=/dev/sda2 panic=1 rootfstype=ext4 rw 
console=ttyAMA0" -drive 
"format=raw,file=/home/ubuntu/qemu_vms/shield.img,index=0,media=disk" -netdev 
user,id=raspbi,hostfwd=tcp::8022-:22 -device e1000,netdev=raspbi

But in this case, only the loopback is defined in the Raspbian instance and ssh 
localhost -p 8022 stll returns:
ssh_exchange_identification: read: Connection reset by peer

Thanks again

-----Original Message-----
From: Peter Maydell <address@hidden> 
Sent: Monday, November 18, 2019 6:08 PM
To: address@hidden
Cc: qemu-discuss <address@hidden>
Subject: Re: Cannot ssh a raspbian guest from the host

On Sun, 17 Nov 2019 at 16:17, <address@hidden> wrote:
> This is the command I used to run the Raspbian instance:
> sudo qemu-system-arm -no-reboot -curses -kernel 
> /home/ubuntu/qemu_vms/kernel-qemu-4.4.34-jessie -cpu arm1176 -m 256 -M 
> versatilepb -serial stdio -append root=/dev/sda2 panic=1 
> rootfstype=ext4 rw console=ttyAMA0 -drive 
> format=raw,file=/home/ubuntu/qemu_vms/2017-03-02-raspbian-jessie.img,i
> ndex=0,media=disk -netdev 
> user,id=shield,hostfwd=tcp: -net nic

This command line is mixing a new style "-netdev" network configuration option 
with an old-style "-net" one. This probably won't work: you should either use 
only new-style config options or only old-style config options.

New-style is either:
  -netdev id=foo,...  plus -device <some network device>,netdev=foo
  -nic ... (to set up an embedded network device that the board
   pre-creates for you)

Old-style is:
 -net nic -net user,... (the -net option is used both to say
  "give me an emulated ethernet device" and also "use the 'user',
  'tap', etc backends; you need to have two lots of -net, one
  for each part of this.)

https://wiki.qemu.org/Documentation/Networking may be helpful, although it is a 
bit sparse on how to do new-style network config with an embedded network 
device model.

-- PMM

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