support for Cyrillic domain

Hello.

Directadmin allows user to add domain in Cyrillic characters.
It does not convert the name to punycod. And when, we using php in fastcgi mode we have a troubles with a names of wrappers. Its in Cyrillic – and apache get to crash.
If anyone knows how to disable directadmin to add domain name, using not a latin letters?
Maybe directadmin can itself to convert not latin domain names to a punycode and add domain names to configs in punycode.

Thanks in advance for suggestions.