If it is a Windows virtual machine, you can obtain the IP address using the following command from the host:
prlctl exec "VM Name" ipconfig | grep "IPv4" | grep -o '\d\{1,3\}\.\d\{1,3\}\.\d\{1,3\}\.\d\{1,3\}'
For * nix VM:
prlctl exec "VM Name" ifconfig eth1 | grep "inet " | grep -o 'addr:\d\{1,3\}\.\d\{1,3\}\.\d\{1,3\}\.\d\{1,3\}' | grep -o '\d\{1,3\}\.\d\{1,3\}\.\d\{1,3\}\.\d\{1,3\}'
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