¥[lead]
% nsupdate
¥>
zone dynamic.myzone.example.
¥>
server 127.0.0.1
¥> key
four.dynamic.myzone.example. sd7qi6tiw+N5fK3mGNDNJU9TwIju+1ye7r2shgfkxIg=
¥> update add
four.dynamic.myzone.example. 900 TXT "I just
added this"
¥>
send
¥[lead] % dig @127.0.0.1
four.dynamic.myzone.example txt