Help me make sense:VLAN, Hyper-V, Intel VMLB

I have serious problems getting VLANS working on a Hyper-V host with an Intel network card.

The hardware:

• A router / switch (linux software bridge) which is a Mikrotik 1100 AH, Router OS 5.1

• A hyper-V server with a 4 port intel NIX

• On the nic there are 1-4 active ports (when down to one to test) in a VMLB team using VMQ (but also tested without). This team is attached to a Hyper-V network, only (i.e. no management access).

So far:

• The network was used for all kinds of traffic without separation. This is a "setup" phase thing. We now need to move the traffic into different VLANS to isolate the virtual machine groups.

• The network works fine without VLAN. According to http://www.intel.com/support/network/sb/CS-030993.htm VMQ activation should automatically activate VLAN support on the virtual switch. Am I missing something?

• The network setup is: Connection type: External. Allow Management OS is turned off.

• Again, the whole thing works nice WITHOUT VLAN.

• I now take one VM (a secondary DNS, external network card) and in the synthetic network adapter I turn on "enable virtual LAN identification" and add the VLAN id there (998).

• I add a VLAN NIC to the bridge group on the switch, identified with tag 998 and add the IP address to that.

• finally, i turn off all NIC connections to the hyper-v server sans 1 (so I know exactly which port will be used)

• I torch (packet log) the ethernet interface. I see some VLAN 998 traffic passing from the ethernet port on the mikrotik router. Namely ethernet 800 (ip) and 806 (arp). I take that the VLAN is thus properly working on the router.

Here comes the clue: there is no traffic seemingly arriving on the virtual machine. The data seems just to be thrown away. That said, arp -a shows the mac address of the other end, so SOME stuff seems to go through.

Anyone an idea? The moment I remove the VLAN again things "just tick".