Re: [Qemu-discuss] "-net udp,..." not working on QEMU 2.0.0 ?

[Peter Maydell]

On 25 September 2015 at 12:48, Willard Dennis <address@hidden> wrote:
> Hi all,
>
> Using the CentOS 7 package of QEMU 2.0.0 ( package name =
> qemu-system-x86-2.0.0-1.el7.5.x86_64 ) and it's generally working fine.
> However, when I tried to use it with GNS3 (networking device emulation
> package) with a certain QEMU VM definition, it formed a directive in the
> QEMU command of the form of:
>
> -net udp,vlan=1,name=gns3-1,sport=10000,dport=10001,daddr=192.168.1.165
>
> To which I'm getting the QEMU error:
>
> Invalid parameter 'udp'
>
> This syntax used to work in earlier versions of QEMU; it looks like the
> "-net udp,..." construct was added into QEMU back in early 2012 specifically
> to support the way GNS3 forms inter-VM network links. Can anyone here
> confirm that it has (or has not) been removed from QEMU as of version 2.0.0?

A bit of googling suggests that '-net udp' has never been supported
in mainline QEMU -- it seems to be a local patch provided by the GNS3
folks. I suggest asking in whatever support forum they provide.

thanks
-- PMM