I have a CCR1072 running tile-6.45.8.
I have IPv6 on the Router.
If I traceroute to 2a02:610:7501:196 - it does not work - as it immediately uses the IPv6 address of my local Exchange Point (IXP).
How can I get the Mikrotik to use the Loopback address - which is in my block of IP's - which can reach the Mikrotik FTP server?

In Cisco - there was an extended ping/traceroute - where one could provide the IP address to Trace/Ping from. We need this functionality on the Mikrotik too! - extended to Software checking and updating.

not sure I understand correctly, but Mikrotik ping has source address attribute / switch?

How do you use it for Ping?
That works...... ping 2a02:610:7501:196 src-address=2001:....
From Winbox - click on Advanced settings.

Does "Traceroute" have that capability too?
That works...... /tool> traceroute 2a02:610:7501:196 src-address=2001:....
From Winbox - options are available (open eyes more)

Most importantly - can you set it so a software update check/upload uses it too?
and I have no answer yet.

Have you tried a source NAT rule to the Mikrotik FTP server?

> Have you tried a source NAT rule to the Mikrotik FTP server?

Nope.
NAT - Network Address Translation - isn't that restricted to IPv4 addresses?

Any chance you could make a suggestion on what that would look like, please?

(If going to 2a02:610:7501:196 then appear to come from 2001:42a0:1)

What I don't understand is my IPv6 seems to work perfectly - except to Mikrotik (the only one so far that does not work). That I find confusing.
A Traceroute from my Mikrotik to the Mikrotik shows IPv4 addresses just before it reaches their FTP (I presume) server.
I'll keep looking anyway.

Sorry, have not played with IPv6 on RouterOS yet, and see there is no "NAT" in IP6 firewall.

I assumed that NAT, i.e. changing of a source address, etc, will still be there.

Best maybe is to see why your IP6 is not working properly on RouterOS, posting copy of config here and someone might assist