Running Zimbra 7.1.0 on ubuntu 8.04 x64
Running SSL IMAP on 993, SSL SMTP on 465.

When doing netstat -tulpn|grep 993 I'm getting:

tcp6 0 0 :::993 :::* LISTEN 7455/java

Does this mean that Zimbra listens on ip6 993 only? How can it be? Intended or a bug?

I don't even have IPv6 address assigned to any interface.