My setup includes 4 ESXI hosts and about 35 virtual machines.
We had to move our environment between buildings and this process took place over several months so until last week we had all vm's running on 2 of the 4 hosts (we will call them ESXI A and B. In the last two weeks I've added back the 2 original hosts(C & D). We have been seeing some wierd stuff with vm's installed on ESXI hosts A&B ie can't ping gateway sometimes, cant ping different servers whether they are physical or virtual until the destination host first pings them then they can ping back until arp entry expires. Last night I vmotion'd one of the servers having this problem to ESXI host C and all these problems disappeared. Is it possible for a VDS to screw up like this on one or two hosts?