Some of my servers don't even have any IPv4 connectivity and there haven't been any failed SSH logins over IPv6.
*tarpit
A honeypot lets people "in" to see/research malware that's in the wild:
* https://en.wikipedia.org/wiki/Honeypot_(computing)
A tarpit just takes up the attacker's resources:
* https://en.wikipedia.org/wiki/Tarpit_(networking)
https://lwn.net/Articles/848291/