Re: NetBSD domU on routed Xen setup

["Dirk H. Schulz" <dirk.schulz%kinzesberg.de@localhost>]

Thanks, Dustin, that helped a lot further.

Just for the record in case someone else needs it:

Using dest_address on the primary interface of the domU did not work. I 
had to:

- define a ppp interface (ifconfig ppp1 create)
- set its adress and dest_address (ifconfig ppp1 1.2.3.4  7.8.9.0)
- set a default route on the ppp interface (route add default 1.2.3.4)

To make it work automatically from system startup I have created the 
file /etc/ifconfig.ppp1 with the following contents:
up
1.2.3.4      7.8.9.10

and add the new defaultroute to /etc/rc.conf.


Dirk



Dustin Marquess schrieb:
> I don't have a setup to test it on, but...
>
> Linux ifconfig(8) says:
>
>       [-]pointopoint [addr]
>               This  keyword  enables  the point-to-point mode of an interface,
>               meaning that it is a  direct  link  between  two  machines  with
>               nobody else listening on it.
>               If  the address argument is also given, set the protocol address
>               of the other side of the link, just like  the  obsolete  dstaddr
>               keyword  does.  Otherwise, set or clear the IFF_POINTOPOINT flag
>               for the interface.
>
> NetBSD ifconfig(8) has:
>
>      ifconfig interface address_family [address [dest_address]] [parameters]
> [SNIP]
>      dest_address    Specify the address of the correspondent on the other end
>                      of a point to point link.
>
> So I guess the NetBSD version would just involve putting the remote IP
> after the local IP on the ifconfig line.
>
> -Dustin
>
> On Tue, Feb 23, 2010 at 11:18 AM, Dirk H. Schulz
> <dirk.schulz%kinzesberg.de@localhost> wrote:
>   
> > Hi all,
> >
> > I am running several Debian dom0s with NetBSD domUs using a bridged setup,
> > that is working fine.
> >
> > I have one Debian dom0 with a routed xen setup, and that is where I have
> > trouble getting NetBSD domUs to connect to the network. On the Debian domUs
> > I have a network interface definition like this:
> >
> >     
> > > iface eth0 inet static
> > >  address 1.2.3.4.5
> > >  gateway 7.8.9.10
> > >  netmask 255.255.255.192
> > >  pointopoint 7.8.9.10
> > >       
> > The gateway address is the address of the dom0 external interface. In the
> > Linux domUs the "pointopoint ..." entry makes the routed setup work.
> >
> > Now how do I configure a NetBSD domU similarly? There seems not to be a
> > "pointopoint" configuration option for interfaces, and setting up a pppoe
> > interface does not make sense to me since there is no pppoe counter part.
> > I googled around a lot but came up empty.
> >
> > Any hint or help is appreciated.
> >
> > Dirk
> >
> >
> >