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Hi All,

I have a simple VLAN-based setup: single controller node and multiple 
compute nodes. Currently neutron DHCP agent resides on controller node 
and uses dnsmasq as a DHCP server.

The problem is that dnsmasq is listening on tap877d3721-e2 interface 
which is mapped to only one particular VLAN. On this particular box (I 
mean controller node) VLAN tags are stripped from incoming packets (due 
to external network configuration which I'm not authorized to change). 
Therefore VM instances cannot get their IPs via DHCP - I see the 
incoming DHCP requests with tcpdump but dnsmasq is just ignoring them. I 
understand that it might be not a correct approach but the current 
situation demands that we make DHCP server be assigned to all interfaces 
including external bridge (br-eth0) . Not only tap877d3721-e2. 
Regardless of VLAN.
However I haven't found a way do achieve this.

Can anybody please help me to solve this situation?

Thank you!

Regards,
Sergey