Virtual switch on FreeBSD

[. at babolo.ru]

> What I would like to do is have a sort of virtual switch emulated on
> my machine - to this I would like to attach a virtual interface on the
> host system, and then I am hoping that would allow me to have some
> sort of stable environment for jails, because I could then alias the
> jails' IP addresses to the virtual adapter and it would be like a
> network in its own right with many IP addresses for many jails.
> 
> The reason I cannot do this under the host is that my main network
> adapters are all DHCP, and I would like to be able to access the jails
> any time. I would like to remove the dependency of the jails on the
> host environments network interface configuration.
I configure loopback interfaces for permanent addresses
when I get dinamic IP from PPPoE.

No matter, what kind of interface are you using,
they are unreacheable from your provider unless
it configure routes for that addresses.

Sorry my bad English.

> I honestly do not know whether this is possible, and having reviewed
> the VLAN documentation, netgraph and tun/tap, I don't know where to
> start let alone if the facilities are there.
> 
> Please CC me in any replies as I am not subscribed to this list.