http://bugs.winehq.org/show_bug.cgi?id=24079
--- Comment #8 from Vince Marsters vince@marsters.co.uk 2010-08-22 18:13:12 --- I have just been looking at that one and it appears it could be.
I have renamed esxi and then added a static hosts entry. I now get past the certificate error when I connect using the hostname but not the IP address, but get an error 'A communication error occurred receiving data from the server)'.
When I get chance I will look further into this one but I am a step further along now.