[TUHS] Early DNS software

[Witold Krecicki]

Hello,
I'm looking for old DNS software - servers, clients, libraries. The
oldest one I've found is BIND 4.3 from 4.3BSD (and it works as a
resolver on 2019 Internet), but there were earlier ones -
http://www.donelan.com/dnstimeline.html says that UCB released first
BIND in 1985, something was running on earlier servers. Any help would
be appreciated.

Witold Krecicki