SymptomsI have Parallels Plesk Panel installed inside Virtuozzo Conteiner based on SuSe OS template.
When login to Hardware Node and delete or add IP address with vzctl the changes are not shown in network interface inside the Container.
However the changes are shown correctly in configuration of the Virtuozzo Container.
ResolutionParallels Plesk Panel installed inside Virtuozzo Container based on SuSe OS template cannot process changes in network interfaces correctly.
You should reboot the Container to make changes be accepted by Parallels Plesk Panel and shown in network interfaces inside Container.
The problem will be fixed in future update of Parallels Plesk Panel that is going to be released after version 9.4.