The paper that has been published here: https://dl.acm.org/citation.cfm?id=3282283 proposes a consensus algorithm based on distributed voting process as an alternative to proof-of-work based blockchains, in which it claims that it would be possible to detect and recognize (and not prevent) MAC address change using Cisco Port Security in a crypto-currency network, because this proposed idea is based on one-machine-one-vote and so it is important to recognize MAC address change in the network.

Do you think it is practicable to recognize (and not prevent) MAC address change in a blockchain network ?

I mean assuming a node is connected to a blockchain network like Ethereum network, then if this node changes its MAC address, is it possible to notify the rest of Ethereum network, if Ethereum network uses Cisco Port Security configuration for detecting MAC address change?

Is "fingerprinting a node" can be considered as a solution to detect MAC address spoofing in Ethereum network without sacrificing "decentralization of Ethereum"? (https://www.npmjs.com/package/node-fingerprint) or (https://pdfs.semanticscholar.org/d5ef/30919b4f28b82d6fb637e17a5a992f82ecaa.pdf)

Thank you

P.S. MAC address change detection using Cisco Port Security is described here: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4000/8-2glx/configuration/guide/sec_port.pdf and here: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/4_1/nx-os/security/configuration/guide/sec_nx-os-cfg/sec_portsec.pdf

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