[Bug 1101187] [NEW] in case ow two networks on the same bridge nova overwrites dnsmasq config

[Bolke de Bruin]

Public bug reported:

Some background: I run a private cloud environment (folsom/stable,
FlatDhcp) in the 172.17.11.XXX/24 range. The private range for instances
is 192.168.100.XX/24 . Basically if I add a floating IP it get's
assigned from the 172.17.11.XX/24 range. Recently, I needed to assign
172.17.11.XX fixed addresses for local usage.

nova-manage network list

1       192.168.100.0/24        None            192.168.100.2   8.8.4.4         None            None          
3       172.17.11.224/28        None            172.17.11.226   8.8.8.8         None            None 

This should happen on the same bridge (br100).

Now when activating an instance with a fixed ip, /var/lib/nova/networks
/nova-br100.conf gets overwitten. So I end up with only the
172.17.11.XXX fixed ip in that list. While i would expect 192.168
addresses and 172.17.11 addresses. It seems that nova is not able to
handle multiple ipranges/dnsmasq on one bridge?

As a workaround I activated the network on a new bridge. I needed to
activate proxy_arp and change some iptables to make sure traffic gets to
the instance. Not something really maintainable :).

** Affects: nova (Ubuntu)
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of Ubuntu
Server Team, which is subscribed to nova in Ubuntu.
https://bugs.launchpad.net/bugs/1101187

Title:
  in case ow two networks on the same bridge nova overwrites dnsmasq
  config

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/nova/+bug/1101187/+subscriptions