On 8/13/12 12:35 PM, James Hogarth wrote:
Hmm this is especially weird given the 5.8 systems are working - otherwise I'd have moved the troubleshooting up to vmware or the switch next...
Migrating one of the vms to the same physical host made them start talking to each other, so it's definitely a vmware issue, though why it's interacting badly with centos 6 is a good question. It could be a bug in vmware tools/the ethernet driver. At least it's narrowed down now...