It looks as my previous post was lost then MikroTik had a server outage a couple of weeks ago.
After upgrading from RouterOS 6 to RouterOS 7.1 my multicast PIM Routing config was gone. That part is all now, NP!
But whatever I do when I try to add a BSR or PR candidate. I get presented the Error: Couldn't add New PIM Candidate - address interface must be specified (6)
Whatever I specify as address, is not being accepted. Not via WebGUI nor via CLI.
Wiki is outdated and only covers RouterOs 6 PIM. Has anyone managed to get PIM SM to work on RouterOS 7?
Edit: I think there is a serious bug in PIM SM.
After adding an instance and then adding an interface template, the instance disappears and the WebGUI behave strangely.
So I went to the CLI and tried:
/routing/pimsm/instance/add name=pimsm1 vrf=main
=> Mikrotik hangs!
=> Mikrotik looses default route!
=> Manual Reboot. Operation restored, but pimsm1 instance disappeard again.