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I am running windows and ubuntu clients on ESXi 6.7 on internet root server.

When entering some websites (“bbc.co.uk”,”web.de”) the webserver reset my TCP connection, the server send ERR_CONNECTION_RESET. All other websites work fine. For windows-update I got a TCP-Flag-Reset too.

It seems to be redirection to https is not working. I ve tried multiple DNS Server (like google, opendns, standard ISP). For Debugging there is no proxy and no firewall.

Is the problem comes from my ESXi TCP-IP-Stack or wrong MAC adresses?

Wireshark Screenshots:

  1. Windows Update
  2. Standard Website
Eugène Adell
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dex.404
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  • Both captures are maybe not showing the same problem. Windows Update shows a RST after a clean SSL Hello and a FIN. The second shows a RST after a 3WHS. Maybe is there a middlebox (like F5 BIG-IP) between you and Internet, check the MAC address you see in your captures. – Eugène Adell Feb 04 '21 at 20:02

1 Answers1

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I figured out that driver problems causes this problem. My nic is not supported by esxi.

dex.404
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