VMware has recalled the latest ESXi 5.5 Patch, released on April 30, 2015.

Affected Product:

VMware ESXi 5.5 Patch Release ESXi550-201504002

(build number: 2702864)

After upgrading to VMware ESXi 5.5 Patch Release ESXi550-201504002 (build number: 2702864) with VMware NSX for vSphere 6.x or Cisco Nexus 1000v, Virtual machines on VXLAN wires are unable to communicate across hosts with their Edges or Distributed Routers.

If you have already upgraded, perform a rollback to the latest version: