How to prevent HP SIM from scanning the VMotion port

If you run your ESXi hosts on HP hardware and have a look at the vmkernel.log files from time to time then you have probably already stumbled over messages like these:

vmkernel: cpu4:2741)MigrateNet: vm 2741: 1982: Accepted connection from <x.x.x.x>
vmkernel: cpu4:2741)MigrateNet: vm 2741: 2052: dataSocket 0x41002750c600 receive buffer size is 563560
vmkernel: cpu4:2741)WARNING: Migrate: 215: Invalid message type for new connection: 542393671.  Expecting message of type INIT (0).

Instead of x.x.x.x you will see an IP address that might be familiar to you: It belongs to a server that has the HP System Insight Manager (SIM) software installed for inventorying / managing / monitoring hardware devices in your network. This software is commonly used in HP shops, because it does a fairly good job with monitoring the hardware health of your servers and alerting if something is wrong, and this basic functionality is for free.

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