I was deploying fresh new vCenter server, after ova file installation while vCenter server configuration on the stage 2 set up vCenter Server, I was keep receiving error Unable to to save IP settings. I found Network configuration was not editable and set to Assign static IP address, all the network information was taken from the earlier provided mentioned on the vCenter OVA installer. I made sure prerequisite DNS entry for vCenter server (A host record and PTR pointer record) is added but still was getting error.
To resolve this I kept SSH access Enabled in the same page and click Next. Then logged into SSH of vCenter shell, cat /etc/systemd/network/10-eth0.network, found DHCP=no setting which I edited with vi tool and set it to DHCP=yes.
Enable Access to the VCSA Bash shell or Appliance Shell
Then refreshed vCenter Server stage 2 setup by launching https://vcenter:5480 url. This time I had option to change Network configuration to Continue with the existing settings, which I already had fed into OVA installation when did the first deploy. After that vCenter server configuration was all ok.
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