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The configuration guide shows support of IP Tunnels. It might need more clarity.
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus3000/sw/interfaces/6_x/b_Cisco_n3k_Interfaces_Configuration_Guide_602_U11/b_Cisco_n3k_Interfaces_Configura...
This USB driver works with most of the recent products Mini-USB based console.
https://software.cisco.com/download/home/282774222/type/282855122/release/3.1
