Re: [uml-user] DHCP-client causes MAC-address to reset

[<jj...@em...>]

"Nic James Ferrier" <nfe...@ta...> wrote:
> jj...@em... writes:
>=20
> > I call it with "eth2=3Dtuntap,ext-test". I got the impression that it
> > is enough to do that when I'm using preconfigured interface. At
> > least there is example of that in Virtual Networking Tutorial. And
> > besides ip-address would be little hard to set as I'm connecting
> > guests to internet through a bridge. Also I would like to mention
> > that tuntap interface works without a problem when using static ip
> > address.
>=20
> Yes. The problem is the allocated mac addresses.
>=20
> I can't remember what the daemon does precisely but I don't remember
> it doing auto-mac address allocation.

In the host side of tap device the mac address seems to be random but it se=
ems like in guest side the mac address is derived from first given ip-addre=
ss and when using dhcp it's always 0.0.0.0 which causes it to be fe:fd:00:0=
0:00:00. The problem is that I can't seem to be able to change the mac addr=
ess to different when using dhcp.

> Anyway, try:
>=20
>    guestkernel ... eth0=3Dtuntap,,fe:fd:00:00:00:01,
>=20
> because as you point out, you don't need the address at the end
> because you're using DHCP.

Thanks, that helped me. Interesting thing is that after giving also the mac=
 address I could alse change it in guest. Could there be a bug related to m=
ac address?

Regards,

Jyrki Jaakkola