Describe what you would like us to do:

The mail redirection fas@fp.o is handled by the server:

• bastion.fedoraproject.org aka
• bastion-iad01.fedoraproject.org [38.145.60.11]
• there is a fallback server at 38.145.60.12

Actually, this server establish connection to my mail server (and others mail servers) using IPv4 routing. We can see that in the mail headers "Received:".

I would like you to provide IPv6 routing to that server, so it can establish IPv6 connections to final destination servers.

The IPv6 address should be stable because we (mail system administrators) need to whitelist it in the SPF check system.

When do you need this to be done by? (YYYY/MM/DD)

Can wait.