Thanks.

so,maybe this is the solution :

# iptables -t nat -A POSTROUTING -o mlan0 -j DNAT
# ip tuntap add tap0 mode tap
# ip link set dev tap0 up
# ifconfig tap0 192.168.99.1/24
# echo 1 > /proc/sys/net/ipv4/ip_forward


iptables v1.8.9 (nf_tables): DNAT: option "--to-destination" must be
specified

What could be the destination ? thanks.

On Fri, Oct 6, 2023 at 1:44 AM Gregory Nowak <greg@???> wrote:

> On Thu, Oct 05, 2023 at 02:20:47PM +0200, Mario Marietto via Dng wrote:
> > I'm trying to set up a bridge on Linux Devuan 5 (host os) with the
> > goal to give the connectivity to FreeBSD 13.2,that I have virtualized
> > with qemu-kvm-libvirt.
>
> If you're trying to setup a bridge, then you're going about it the
> wrong way.. You'd set that up in /etc/network/interfaces, or in a file
> under /etc/network/interfaces.d where you bridge your mlan0 to your
> tap0. This is more involved when using wifi, but it can be done. See
> man interfaces, the bridge-utils package, and the wpasupplicant
> package. You mentioned
> you're using network manager. If so, then you will probably want to
> dump network manager if you go this route.
>
> > on Devuan I did :
> >
> > # iptables -t nat -A POSTROUTING -o mlan0 -j MASQUERADE
>
> If you want to keep going the way you are, then I think you want the
> DNAT target, not MASQUERADE.
>
> Greg
>
>
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--
Mario.