Support for Wildcard Domains in RFC 2136 DDNS

[xpxp2002]

I'm trying to add a wildcard "hostname" to RFC 2136 DDNS, but it is being rejected as "The DNS update host name contains invalid characters." This is a valid format, and I have used it with nsupdate in the past. Is there any chance the form validation for wildcard RRs might be fixed?