There is an interesting windowserver.it that well explain how to configure HyperV 2012 cluster lan card.
Hyper-V: Configurare le Reti in un Cluster
http://www.windowserver.it/2014/10/hyper-v-configurare-le-reti-in-un-cluster/
Windows Server 2012 Hyper-V Best Practices (In Easy Checklist Form)
https://blogs.technet.microsoft.com/askpfeplat/2013/03/10/windows-server-2012-hyper-v-best-practices-in-easy-checklist-form/