Evening all, I'm having major issues with a self hosted setup (oVirt 3.4.4 & CentOS 6.5) on Hetzner, with 2 subnets allocated to the server. Routing to and from the additional IP ranges is working as expected, and I can allocate any of the IPs to a virtual interface on the host and get connectivity, so from what I can tell the network routing side of things is correct. However, when I move any of the allocated IPs to any of the guests, I get 1 ICMP response before complete packet loss. This happens at all times, even with iptables completely unloaded and an Accept policy thoughout. The structure is just a basic bridge called ovirtmgmt that all interfaces are bound to. Guests that are affected can communicate with other guests on either of the two subnets, and also with the host, so the bridge is up and running, but when it comes to any traffic trying to egress by the default route, it comes to a halt. In addition, all the hosts have unique MACs, dmesg shows that the appropriate vnets are entering forwarding states and STP is disabled on the bridge. And just to confuse matters, one guest is working just fine - yet when the settings are replicated to any other host the new host still fails to work. Even if I put the working IP onto another guest, it fails to transfer any data. All I get is constant who-has requests on the host bridge whilst the guest looks for the next-hop. Has anyone experienced this before? Where's next on the list of places to look?! Regards Kyle -- Kyle Gordon - 2M1DIQ Web: http://lodge.glasgownet.com Jabber/Email/SIP: kyle(a)lodge.glasgownet.com