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DrorAmbar
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Windows 10 pro guest on ESXi 6.7 loses network connectivity with static IP

Hello all,

I recently installed Windows 10 Pro on a VM hosted on ESXi 6.7.

The new machine gets an IP address from DHCP as followed, running ipconfig:

IPv4 10.1.12.129

Subnet Mask 255.255.255.0

Default Gateway 10.1.12.1

When I assign it a static IP (10.1.12.87) connectivity is lost and this is what I get running ipconfig:

IPv4 169.254.116.155

Subnet Mask 255.255.0.0

Default Gateway 10.1.12.1

Also, when I check the adapter Status -> Details I notice that there's a line Autoconfiguration IPv4 169.254.116.155

As soon as I change it back to DHCP, it acquires the same IP above (.129) and everything is working again

I verified that it's not a DNS issue.

I tried to disable and reenable the network adapter, but with no success.

If it's relevant, the vSwitch includes a dedicated NIC, uplink to the Core switch, the port is untagged.

Any help will be highly appreciated!

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a_p_
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The behavior that you describe points to a duplicate IP address conflict.

Can you confirm that this IP address is not already in use?

Are you able to assign another static IP address?

André

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a_p_
Leadership
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The behavior that you describe points to a duplicate IP address conflict.

Can you confirm that this IP address is not already in use?

Are you able to assign another static IP address?

André

DrorAmbar
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I was about to update this post and close it but you beat me to it Smiley Happy

Yes, that is correct.

Before I assigned this IP I pinged it and because there was no reply I assumed it was available.

I checked my documentation and found out that it was actually in use.

As soon as I selected an available IP address the issue was resolved.

Thank you André for the quick response!

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scott28tt
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Moderator: Thread moved to the Windows guest area, not a vSphere matter.


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