I think I reported this once before and was fixed but it seems to be back again.
When assigning any shared or private IPv6 to a domain it also wants to add the /64 to then of the address
Updating IP addresses in virtual server romulus.borgnet.us
Changing IP address of virtual website ..
Saving server details ..
Applying web server configuration ..
.. failed! An Apache configuration error was detected :
Syntax error on line 1 of /etc/apache2/sites-enabled/0-romulus.borgnet.us.conf:
The address or port is invalid
Action 'configtest' failed.
The Apache error log may have more information.
What it writes is the following which is wrong...