We have a third party centos 6.6 appliance running on ESXi 6.U2 cluster and we are having ICMP issue with that appliance. Ping drops from time to time when we ping that appliance.
I noticed the nic card is flexible. The appliance does not have vmtools so i will not be able to add vmxnet3 . Is it ok to use flexible nic ? I thought it has to be vlance or E1000 not the flexible.
How do i change this to vlance?