Well, it need not use the "... -i indentity-file ... root@kindle ..." parts of the command, that can all be included in a nickname (shortcut) entry in your ~/.ssh/config file.
The "HowTo" is to be found with the "filter by prefix" feature.
Also, NiluJe's most recent USBnet can assign unique MAC addresses, based on the Kindle's serial number, to each end of the cable.
Which in-turn allows your workstation's network automation identify the "Kindle of the Moment" and assign a unique set of IPv4 address (and a unique set of IPv6 address will be auto-configured by the normal IPv6 discovery process).
Which in-turn can mean putting an end to the "I found a duplicate key" business.
It also means (since IPv6 address are globally unique, without any NAT) my Kindle and "talk" to your Kindle (or twobobs, or ...).
That "HowTo" is a WIP.
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