Re: [Qemu-devel] [PATCH] slirp: Allow to disable IPv4 or IPv6

[Samuel Thibault <samuel.thibault@gnu.org>]

Markus Armbruster, on Mon 21 Mar 2016 08:33:52 +0100, wrote:
> Samuel Thibault <samuel.thibault@ens-lyon.org> writes:
> > Make net=0.0.0.0 disable IPv4 and ip6-net=:: disable IPv6, so the user can
> > setup IPv4-only and IPv6-only network environments.
> 
> Do "net=" and "ip6-net=" mean anything useful?  If not, wouldn't that be
> a more natural way to switch off than abusing the wildcard address?

An empty parameter looks odd to me.  0.0.0.0 is used e.g. by ifconfig to
disable an interface, that's why I thought about it.  Perhaps an even
better way would be net=none and ip6-net=none?

> > @@ -2427,7 +2427,7 @@
> >  #
> >  # @ip: #optional legacy parameter, use net= instead
> >  #
> > -# @net: #optional IP address and optional netmask
> > +# @net: #optional IP address and optional netmask. Set to 0.0.0.0 to disable IPv4 completely
> 
> Long line.
> 
> Syntax?  Default value?

Well, that's what was there :)

But yes I can add that along the way.  I'm however now wondering
what difference is supposed to exist between the documentation in
qapi-schema.json and in qemu-options.hx?  (I know they are separate
software layers, thus the two documentations, but does it make sense to
have differing documentations when the qapi schema and the CLI options
work the same?)

Samuel