# Revision history [back]

Hi, I've updated from havana to icehouse and now qbr, qvo and qvb interface are missing on the compute node. Furthermore, vms continuously send dhcp request even though ip is assigned (firewall problem?). I'm using ml2 with gre. Is there some problem with the database in neutron? Please help me!

Thank you

Hi, I've updated from havana to icehouse and now qbr, qvo and qvb interface interface are missing on the compute node and tap interface is directly connected to the integration bridge. Apparently, security groups rules rules are working (and i don't know thy). Furthermore, vms continuously send dhcp request even though ip is assigned (firewall problem?). I'm using ml2 with gre. gre. Is there some problem with the database in neutron? Please help me!