-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi,

I'm running a large number (~20) of DomU machines with a rather =20
complex network topology
that is based on a number of VLANs being configured in each DomU (and =20=

the Dom0). Most
things are working just great: all 16 VLANs work, there are NFS =20
mounted partions, NFS swap,
ten different DHCP infrastructures on different VLANs, etc, etc. =20
(This is a lab environment
that usually takes a full classroom of computers that I'm collapsing =20
into a single machine).

There is just a single problem that I'm having trouble with and that =20
is that my Dom0
is unable to communicate with my DomUs when using VLANs.

I have a single bridge, bridge0, configured and it is up and all =20
xennetN devices plus
the physical interface of the Dom0 (an ste0) are connected to the =20
bridge. The DomUs and
the Dom0 can communicate just fine over the bridge when not using =20
VLANs but with VLANs
configured the DomUs can still talk while the Dom0 is isolated.

Here's an example with one VLAN interface, the Dom0 and two DomUs. =20
All three talk just
fine over the [ste0, xennet0, xennet0] interfaces, but over [vlan1, =20
vlan1, vlan1] the
Dom0 is isolated. I've removed the v6 stuff for brevity (it is of =20
course there).

Dom0:
ste0: =20
flags=3D8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST> =20=

mtu 1500
         address: 00:05:5d:1a:88:d8
         media: Ethernet autoselect (100baseTX full-duplex)
         status: active
         inet 192.168.32.32 netmask 0xffffff00 broadcast 192.168.32.255
vlan1: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
         vlan: 1 parent: ste0
         address: 00:05:5d:1a:88:d8
         inet 192.168.1.11 netmask 0xffffff00 broadcast 192.168.1.255

DomU #1:
xennet0: =20
flags=3D8863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST> mtu 1500
         address: aa:00:00:0c:00:09
         inet 192.168.32.33 netmask 0xffffff00 broadcast 192.168.32.255
         inet alias 10.99.99.1 netmask 0xffffff00 broadcast 10.99.99.255
vlan1: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1496
         vlan: 1 parent: xennet0
         address: aa:00:00:0c:00:09
         inet 192.168.1.10 netmask 0xffffff00 broadcast 192.168.1.255

DomU #2:
xennet0: =20
flags=3D8863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST> mtu 1500
         address: aa:00:00:00:00:01
         inet 192.168.32.1 netmask 0xffffff00 broadcast 192.168.32.255
vlan1: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1496
         vlan: 1 parent: xennet0
         address: aa:00:00:00:00:01
         inet 192.168.1.1 netmask 0xffffff00 broadcast 192.168.1.255

All NetBSD 3.0REL, xentools 2.0.7 and modern stuff everywhere.

Any ideas anyone?

Regards,

Johan Ihr=E9n

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.0 (Darwin)

iQCVAwUBQ72FkPotlDfa2H4ZAQJKYQQAt1ejPDjn8O3SMmRMekqDgIRnzB7C4h4b
uJ5+CzyacZn9+zBAG6z/1bpWwUMw9gjp2r1J/I4dXJcWJ/Q/X/CnXa75R6LdrmwE
ba/y/VbJ2NU23W3d/mcpdYFrkLuUIoHrl76gtoWIza+sPcm4VxtLaoqFfJHxf1cX
QYnyg/7s5zM=3D
=3D1dpo
-----END PGP SIGNATURE-----