TS3 & TS5 client only send DNS query type A even using IPv6 address


I have a TS3 server and global IPv6 address, and my friend can connect to my server by IPv6 address.

However the client connected failed when using the domain. I am sure that I’ve already added an AAAA record.

So I used Wireshark to capture TS3 & TS5 client dns query packets, found that the client only send type A DNS query, even using IPv6 address. I don’t have a global IPv4 address.