I have a CentOS 7.2 host running Virtual Machine Manager, there are three guest VMs on this host (all are CentOS 7.2)
Two servers (A and B) are on the same network 192.168.122.0/24, they have the same Virtual NIC configuration set up with NAT (virbr0). Guest A has an address of 192.168.122.50 and Guest B has address of 192.168.122.150, both have static IPs configured. Guest A can ping/ssh to Guest B or vice versa.
Guest C is on a different subnet 192.168.100.0/24, Virtual NIC configuration also set up with NAT (virbr1). Guest C has a static IP address of 192.168.100.100.
Guest C cannot ping or ssh to either guest A or B. However, both A and B can ping/ssh to C. No routes have been explicitly defined. Firewalld configuration is default for all guests and host machines.
All three guests are able to get out to the internet, get updates, etc. I'm thinking I was supposed to set something up in order for C to ping/ssh A and B. But I can't think of what that should be. Any ideas?