We have 3 x CentOS 6.4/6.5 hosts and around 15 guests across them - Cloudmin Pro (25 VMs) controls them all. Recently I've had some issues with guest connectivity which I think relates to ebtables and tapN configuration.
Taking one of the hosts as an example, there are 5 guests on there each with their own eth0 NIC. Am I correct in assuming that each guest should have its own tapN and not be sharing with another guest?
If I am correct, then something has gone wrong on my system as I can see 2 pairs of guests that have the same tapN number - this could be a result of moving them from another host, or it could be related to changes I've made to ebtables just recently via Cloudmin's interface.
Is there a simple way to specify new tapN references for these machines to remove the shared config?
This is a production environment so I need to be 100% sure of success prior to applying any changes.
Thanks in advance.