Hi to all.
I have recently created 4 TOR relays on two different ISPs (frantech.ca and yourserver.de). They work smoothly with IPv4.
Now I wanted to add IPv6 as well, as both ISPs provide a / 64 address.

In my torrc file I have inserted these two lines:

ORPort nnnn.nnnn.nnnn.nnnn: 8001
ORPort [2605: 6400: 10: 55c: 199: 195: 250: 83]: 8001

But I get this error: "[NOTICE] Unable to find IPv6 address for ORPort 8001. You might want to specify IPv4Only to it or set an explicit address or set Address."

Then only the IPv4 address is enabled. I have done various tests but I cannot find the solution.
Can you tell me the correct configuration? :-)