dynamic DNS idiosyncrasies

[quattrolinux]

I restored vpnserver configuration from a backup, started the server, previously chosen DNS correctly appeared. However, after several weeks, I opened dynamic DNS screen and was surprised by seeing generic vpnXXXX name assigned and DNS hash completely different.
Fortunately my original name still in softether DNS so I am not too worried but softether DNS servers ended up with another useless entry.

Question: is it possible to delete useless vpnXXXX DNS entry from softether.net DNS system?

[cedar]

There may be no way to delete it, but the random namespace is wide enough that you don't need to worry about a little wastage.