In VMware it is possible to manaully configure the MAC address on a virtual network adatper. This results in a MAC address that can contain upper and/or lower case characters.

It appears the validator matches strings without ignoring case:

https://github.com/kubev2v/forklift/blob/main/pkg/controller/plan/adapter/vsphere/validator.go#L314

This results in the IP address of the VM not being preserved during migration:

~~~
"Guest information on vNICs is missing, cannot preserve static IPs. Make sure VMware tools are installed and the VM is running."
~~~

MTV: 2.7.11

Always / 100%

1. Create a virtual network adapter on a VMware virtual machine with upper case characters.
2. Migrate the virtual machine using MTV. 

Virtual machine IP address is not preserved during the migration.

MAC addresses should be matched case insensitive and the IP address of the virtual machine should be preserved during the migration process.