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qemu on pop_os/ubuntu/debian and VDE

From: Pascal
Subject: qemu on pop_os/ubuntu/debian and VDE
Date: Mon, 30 Sep 2019 21:32:48 +0200

hello world,

I just installed qemu on a new pop_os 19.04 to test the trio qemu, vde_switch and slirpvde under another environment (previously under arch) but it seems that VDE support is not enabled there : where to find the compilation options used to compile qemu ?

I get this error message when I start qemu as below : qemu: Parameter 'type' expects a net backend type (maybe it is not compiled into this binary)

regards, lacsaP.

---------- Forwarded message ---------
De : Pascal <address@hidden>
Date: ven. 27 sept. 2019 à 09:23
Subject: [Qemu-discuss] connect virtual machines to each other
To: qemu-discuss <address@hidden>


I come back to this subject about using VDE to connect VM.
this is what I use:

$ vde_switch
$ slirpvde -L 2222:
$ qemu -enable-kvm -m 512 -nic vde,mac=52:54:00:12:34:56 samba.disk      #
$ qemu -enable-kvm -m 512 -nic vde,mac=52:54:00:12:34:57 linux.disk      #
$ qemu -enable-kvm -m 1024 -nic vde,mac=52:54:00:12:34:58 windows.disk   #

but I have many network problems with it that I can't identify and explain to access in ssh (ssh -p 2222 root@localhost) to the targeted machine : one time it works, the other time it doesn't, the other time the connection freezes (and eventually resumes after a few moments) or is simply cut off (slirpvde returns without any explanation).

of course I suspect slirpvde to be the problem, especially since the VM communicate with each other without problems.

do any of you have an explanation, a beginning of a solution or a path to follow ?
is VDE still maintained ? I like using it because it does not require any privileges.

regards, lacsaP.

---------- Forwarded message ---------
De : Pascal <address@hidden>
Date: lun. 23 sept. 2019 à 10:33
Subject: Re: connect virtual machines to each other
To: qemu-discuss <address@hidden>


for information : the disabling of my firewall fixed the problem :-)

regards, lacsaP.

Le mer. 18 sept. 2019 à 11:57, Pascal <address@hidden> a écrit :

I have two Linux VM that communicate without any problem when I use VDE but their communication stops when I try to connect them with a multicast bus : does anyone have an idea ?

qemu -nic vde,mac=52:54:00:11:11:11 vm1.disk
qemu -nic vde,mac=52:54:00:22:22:22 vm2.disk

and all is ok (ping && cetera) :-)

qemu -nic socket,mac=52:54:00:11:11:11,mcast= vm1.disk
qemu -nic socket,mac=52:54:00:22:22:22,mcast= vm2.disk

and all is ko :-(

regards, lacsaP.

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