Solved
We ran into the same network problem as gdoornenbal.
We used to have port1 mapping to "Network Adapter1" on 5.4.4. We lost the network connection after upgrade to 5.6.1.
We had to go to VMware to disable "Network Adapter1" and enable ""Network Adapter4"
This is the opposite of the description on page 10 of https://docs.fortinet.com...r-v5.6.1-release-notes
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